A building contractor employs 20 male, 15 female and 5 child workers. To a male worker he pays Rs.25 per day, to a female worker Rs.20 per day and a child worker Rs.8 per day. The average wage per day paid by the contractor is?

1. Rs.20

2.Rs.21

3.Rs.22

4. Rs.23

A student scored an average of 80 marks in 3 subjects: Physics, Chemistry and Mathematics. If the average marks in Physics and Mathematics is 90 and that in Physics and Chemistry is 70, what are the marks in Physics?

1.60

2.64

3.72

4.80

A total of 3000 chocolates were distributed among 120 boys and girls such that each boy received 2 chocolates and each girl received 3 chocolates. Find the respective number of boys and girls?

1.70, 50

2.60, 60

3.50, 70

4. None of these

Five years ago the average of the ages of A and B was 40 years and now the average of the ages of B and C is 48 years. What will be the age of the B ten years hence?

1. 55 years

2.56 years

3.58 years

4.Data inadequate

In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?

1.Rs.5000

2.Rs.4600

3. Rs.5400

4.Rs.2300

In an exam, Amar scored 64 percent, Bhavan scored 36 percent and Chetan 44 percent. The maximum score awarded in the exam is 800. Find the average mark scored by all the three boys?

1.384

2.364

3.324

4.None of these

Nine men went to a hotel. Eight of them spent Rs.3 each over their meals and the ninth spent Rs.2 more than the average expenditure of all the nine. Determine the total money spent by them? Rs.29.25

1.Rs.29.25

2. Rs.30.25

3.Rs.32

4.Rs.35

The average age of a husband and a wife is 23 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child?

1.1 year

2.2 years

3.3 years

4.4 years

The average age of seven persons sitting in a row facing east is 28 years. If the average age of the first three persons is 21 years and the average age of the last three persons is 34 years, then find the age of the person sitting in the middle of the row?

1.30 years

2.31 years

3.26 years

4.33 years

The average of first 10 odd numbers is?

1.11

2.10

3.17

4.9

The average of first ten prime numbers which are odd is?

1.12.9

2.13.8

3.17

4.15.8

A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17thinnings?

1.34

2.35

3.36

4.37

A batsman makes a score of 64 runs in the 16th innings and thus increased his average by 3. Find his average after the 16th inning?

1.17

2.29

3.18

4.19

A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.150. Find the unknown rate of two blankets?

1.Rs.150

2.Rs.225

3.Rs.250

4.None

A salt manufacturing company produced a total of 5000 tonnes of salt in January of a particular year. Starting from February its production increased by 100 tonnes every month over the previous months until the end of the year. Find its average monthly production for that year?

1. 6060

2.7070

3. 5550

4.4440

A team of eight entered for a shooting competition. The best marks man scored 85 points. If he had scored 92 points, the average scores for. The team would have been 84. How many points altogether did the team score?

1.625

2.665

3.632

4.656

A team of eight entered for a shooting competition. The best marks man scored 85 points. If he had scored 92 points, the average scores for. The team would have been 84. How many points altogether did the team score?

1.625

2.665

3.632

4.656

A trader purchased two colour televisions for a total of Rs. 35000. He sold one colour television at 30% profit and the other 40% profit. Find the difference in the cost prices of the two televisions if he made an overall profit of 32%?

1.Rs. 21000

2.Rs. 17500

3.Rs. 19000

4.None of These

Dacid obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?

1.65

2.69

3.72

4.None of These

Find the average of the first 20 natural numbers?

1.10

2.11.5

3.12

4.10.5

he average of first 10 prime numbers is?

1.10

2.12.5

3.12.9

4.15.5

Rahim bought 65 books for Rs.1150 from one shop and 50 books for Rs.920 from another. What is the average price he paid per book ?

1.Rs.20

2.Rs.18

3.Rs.22

4.None of these

Rs. 6000 is lent out in two parts. One part is lent at 7% p.a simple interest and the other is lent at 10% p.a simple interest. The total interest at the end of one year was Rs. 450. Find the ratio of the amounts lent at the lower rate and higher rate of interest?

1. 5 : 1

2.4 : 1

3.3 : 2

4. 2 : 1

The average age 9 members of a committee are the same as it was 2 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?

1.7 years

2.11 years

3.18 years

4. 27 years

The average age of 8 men increases by 2 years when two women are included in place of two men of ages 20 and 24 years. Find the average age of the women?

1.36 years

2.24 years

3.30 years

4.18 years

The average age of a group of 10 persons was decreased by 3 years when one person, whose age was 42 years, was replaced by a new person. Find the age of the new person?

1.22

2.24

3.12

4.8

The average age of M boys is 'b' years and of 'n' girls 'c' years. The average age of all together is?

1.(mb "â€œ nc)/ (m + n) years

2. (mb + nc)/ (m - n) years

3.(mb + nc)/ (m + n) years

4. (mb "â€œ nc)/ (m - n) years

The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy?

1.15

2.9

3.18

4.21

The average amount with a group of seven numbers is Rs. 20. If the newly joined member has Rs. 50 with him, what was the average amount with the group before his joining the group?

1.Rs. 25

2.Rs. 18

3.Rs. 15

4.Rs. 22

The average height of 35 boys in a class was calculated as 180cm. It has later found that the height of one of the boys in the class was wrongly written as 166 cm whereas his actual height was 106 cm. Find the actual average height of the boys in the class (Round off your answer to two decimal places).

1.179.29 cm

2. 178.29 cm

3. 179.38 cm

4.None of These

The average height of 50 pupils in a class is 150 cm. Five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. The new average height of the pupils of the class (in cm) is __________ .

1.149

2.151

3.152

4.153

The average mark of the students of a class in a particular exam is 80. If 5 students whose average mark in that exam is 40 are excluded, the average mark of the remaining will be 90. Find the number of students who wrote the exam.

1.20

2.15

3.25

4.35

The average marks in mathematics scored by the pupils of a school at the public examination were 39. If four of these pupils who actually scored 5, 12, 15 and 19 marks at the examination had not been sent up, the average marks for the school would have been 44. Find the number of pupils sent up for examination from the school?

1.20

2.25

3.30

4.32

The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?

1.50

2. 47.5

3.59

4.52.5

The average of 10 numbers is 23. If each number is increased by 4, what will the new average be? 9

1.22

2.27

3.25

4.29

The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is?

1.11.0

2.11.3

3.11.4

4.11.5

The average of 11 results is 50, if the average of first six results is 49 and that of the last six is 52. Find the sixth result?

1.46

2.56

3.34

4.57

The average of 13 numbers is 60. Average of the first 7 of them is 57 and that of the last 7 is 61. Find the 8th number?

1.46

2.32

3.68

4.51

The average of 1st 3 of 4 numbers is 16 and of the last 3 are 15. If the sum of the first and the last number is 13. What is the last numbers?

1.8

2.6

3.5

4.2

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

1.0

2.1

3.10

4.19

The average of 35 numbers is 25. If each number is multiplied by 5, find the new average?

1.125

2.134

3.170

4.98

The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation? A. 9B. 8C. 7D. 6

1.9

2.8

3.7

4.6

The average of first 10 even numbers is?

1.18

2.22

3.9

4.11

The average of first 10 natural numbers is?

1.5

2.5.5

3.6.5

4.6

The average of first five prime numbers greater than 20 is?

1.31.00

2.31.01

3.32.00

4.32.2

The average of five results is 46 and that of the first four is 45. The fifth result is?

1.1

2.10

3.12.5

4.50

The average of four positive integers is 69. The highest integer is 93 and the least integer is 39. The difference between the remaining two integers is 28. Which of the following integers is the higher of the remaining two integers?

1.58

2.86

3.49

4.Cannot be determined

The average runs scored by a batsman in 20 matches is 40. In the next 10 matches the batsman scored an average of 13 runs. Find his average in all the 30 matches?

1.31

2.29

3.28

4.30

The average salary of a person for the months of January, February, March and April is Rs.8000 and that for the months February, March, April and May is Rs.8500. If his salary for the month of May is Rs.6500, find his salary for the month of January?

1.3000

2.2500

3.4500

4.5000

The average salary of workers in an industry is Rs.200 the average salary of technicians being Rs.400 and that of non-technicians being Rs.125. What is the total number of workers?

1.250

2.275

3.550

4.400

The average salary per head of the entire staff of an office including the officers and clerks is Rs.90. The average salary of officers is Rs.600 and that of the clerks is Rs.84. If the number of officers is 2, find the number of officers in the office?

1.1540

2.960

3.840

4.1020

The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday?

1.40 degrees

2.38 degrees

3.36 degrees

4.34 degrees

The average weight of 25 persons sitting in a boat had some value. A new person added to them whose weight was 46 kg only. Due to his arrival, the average weight of all the persons decreased by 5 kg. Find the average weight of first 25 persons?

1.55 kg

2.62 kg

3.56 kg

4.None

The average weight of a group of boys is 30 kg. After a boy of weight 35 kg joins the group, the average weight of the group goes up by 1 kg. Find the number of boys in the group originally ?

1.4

2.5

3.6

4.7

The average weight of a group of persons increased from 48 kg to 51 kg, when two persons weighing 78 kg and 93 kg join the group. Find the initial number of members in the group?

1.21

2.22

3.23

4.None of These

The present average age of a family of five members is 26 years. If the present age of the youngest member in the family is ten years, then what was the average age of the family at the time of the birth of the youngest member ? (Assume no death occurred in the family since the birth of the youngest)

1.18 years

2.14 years

3.20 years

4.16 years

The total marks obtained by a student in Mathematics and Physics is 60 and his score in Chemistry is 20 marks more than that in Physics. Find the average marks scored in Mathamatics and Chemistry together.

1.40

2.30

3.25

4.Data inadequate

The total marks obtained by a student in Physics, Chemistry and Mathematics is 150 more than the marks obtained by him in Physics. What is the average mark obtained by him in Chemistry and Mathematics?

1.75

2.150

3.50

4.None of these

Three years ago the average age of a family of six members was 19 years. A boy have been born, the average age of the family is the same today. What is the age of the boy?

1.1 year

2.1.5 years

3.2 years

4.2.5 years

Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is?

1.Rs.3

2. Rs.4.50

3.Rs.5.00

4.Rs.7.50

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