**Campus Recruitment – Quantitative Aptitude – Averages**

Contents

### Concepts

### Conceptual Examples

**Exercise**

1) Find the average of 5 odd numbers between 40 to 50.

a) 44.5 b) 43 c) 45 d) 4 e) 45.5

2) Find the average of prime numbers between 60 to 80?

a) 71 b) 70.2 c) 71.6 d) 73.25 e) 70.8

3) Average weight of Ram and Anil is 54 kgs. Average weight of Sunil, Vamsi and Krishna is 56 kgs. Find the average weight of Ram, Ami, Sunil, Vamsi, Krishna?

a) 56.3 kg b) 55.2 kg c) 55.8 kg d) 56.4 kg e) 54.6 kg

4) The average of 8 numbers is 12.5. Average of two of the numbers is 9.5. Average of another two numbers is 14.5. Find the average of remaining four numbers?

a) 13 b) 14.5 c) 13.5 d) 12.25 e) 12

5) The average of 16 matches of a cricketer is 43.25. The average of 10 matches of the same cricketer is 41.5. Then find the average of the other six matches of the cricketer? (approximately)

a) 45.5 b) 46.17 c) 44.65 d) 46.25 e) 46.84

6) A man buys diesel of price RS 20,RS 22 and RS 24 per liter for three consecutive years. If he spends RS 5000 in each year, then find the average cost of diesel for him for all these three years? (approximately)

a) 24.40 b) 22.65 c) 21.80 d) 22.40 e) 24.35

7) The average visitors of a park on week days other than Sunday are 542. But on Sunday, the visitors are 948. In a month consists 31 days has 5 Sundays, find the average visitors of a day in the month? (approx).

a) 598 b) 604 c) 609 d) 607 e) 612

8) The average of 7 numbers is 32. If one number is included, average becomes 34. Find the number included?

a) 54 b) 42 c) 48 d) 58 e) 44

9) The average of 9 numbers is 43. The average of first 5 numbers 42 and the average of last 5 numbers 46. Find the 5th number?

a) 53 b) 48 c) 48.5 d) 52 e) 52.5

10) The average age of 20 boys is 13 years. The average age of first 11 boys is 12 years, average age of next 8 boys is 14 years. Find the age of 20th boy?

a) 12 years b) 13 years c) 14 years

d) 16 years ‘ e) 15 years

11) In an office 30 men and 20 women are working. The average salary of them is RS 3200. If women gets RS 300 less than men, find the salaries of a man, a woman.

a) RS 3400,RS 3100 b) RS 3500, RS 3200 c) RS 3320,RS 3020

d) RS 3350,Rs 3050 e) RS 3280, Rs 2980

12) A bus travels 1000 km distance at an average speed of 40 km/hr and returns at 30 km/hr. Find the average speed of the bus for the whole journey?

a) 36.5 km/hr b) 35 km/hr c) 33 km/hr

d) 34.2 km/hr e) 34 km/hr

13) The average weight of 12 persons is increased by 2 kg when one lady, who weighs 60 kg is replaced by a man. Then what is the weight of the man?

a) 82 kg b) 84 kg c) 80 kg d) 85 kg e) 86 kg

14) Average age of 4 members is 25 years. Age of first person is thrice the age of the second one. Age of the third person is 1/4th of the age of the first one, age of 4th is 1/3 rd of the age of 3rd one. Find the age of the 3rd one?

a) 15 years b) 12 years c) 16 years

d) 18 years e) 25 years

15) Average income of Raju, Sonu and Rajani is RS 4600. Average income of Raju and Sonu is RS 4200. Average income of Sonu and Rajani RS 4800. Find the income of Raju?

a) RS 4300 b) RS 4250 c) RS 4600 d)RS 4450 e) RS 4200

16) The average height of 25 boys in an academy of 40 is 165 cm. The average height of the remaining 15 is 155 cm. Find the average height of the academy?

a) 158 cm b) 162.25 cm c) 161.25 cm d) 162.5 cm e) 160 cm

17) The average of 10.5, 16.5, 18, 13, 15, P is 14.5. Then find the value of P?

a) 13.5 b) 15.2 c) 14.5 d) 15 e) 14

18) Out of 5 numbers the average of the first 4 numbers is 26. And the average of the last four number is 25. If the first number is 20, then find the last number?

a) 16 b) 15 c) 18 d) 17 e) 20

19) A man bought his office furniture. He bought 28 chairs, 12 tables and 4 computer stands for RS 24320. If the average price of a chair is RS 450 and the average price of a computer stand is RS 1250, then find the average price of the table?

a) RS 580 b) RS 540 c) RS 640 d) RS 560 e) RS 620

20) The average weight of 16 students is 24 kg. If the weight of the class teacher is included, the average weight increases by 2 kg. Find the weight of teacher?

a) 55 kgs b) 62 kgs c) 60 kgs d) 56 kgs e) 58 kgs

21) The run rate of the first 15 overs of the cricket game is 4.8. If the target is 294. What should be the average run rate for the remaining 35 overs? (approximately)

a) 5.8 b) 6.3 c) 6.8 d) 5.9 e) 6.6

22) The revenue of an American publisher for first 3 quarters is 13 m$, 12.6 m$ and 14.3 m$. The average revenue for 4 quarters should be 15 m$. Find revenue target for the last quarter? (m$ = million dollars)

a) 10 m$ b) 15 m$ c) 20.1 m$ d) 25 m$ e) 30 m$

23) The average of 35 observations was 64. But an observation was wrongly taken as 45 instead of 72. Find the new average of the observations after the mistake rectified? (approximately)

a) 63.7 b) 64.3 c) 65 d) 64.8 e) 65.2

24) The average of 15 BPO salaries is RS 8500. If the Team leader’s salary is also included, the average salary increases RS 300. Then find the salary of team leader?

a) RS 13300 b)RS 4200 c) RS 3600 d)RS 12800 e) RS 5600

25) If the average salary of men and women is RS 2800. The average salary of men is RS 3200. The average salary of women is RS 2500. Then find ratio of men and women?

a) 3 : 4 b) 5 : 6 c) 7: 8 d) 1: 2 e) 4 : 5

26) Five years ago, the average age of Mamatha and Sabitha is 17 years. Now if Kavitha’s age added, the average becomes 21 years. Then find the age of Kavitha?

a) 19 years b) 20 years c) 22 years

d) 25 years e) 26 years

27) Sachin scored 364 runs in 4 matches. Ganguly scored 384 runs in 5 matches. Sehwag scored 224 runs in 3 matches. Then find the average score of Sachin, Ganguly and Sehwag for all the matches?

a) 81.6 b) 81 c) 80.8 d) 82.3 e)81.8

28) The average mess charges of 30 boys for one month is RS 592. The warden forgot to include the bill of worth RS 1530. Then find the average mess charges for 30 boys for one month.

a) RS 643 b) RS 645 c)RS 635 d)RS 639 e)RS 646

**Explanations**

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