Average problems
- 1. Seven years ago, the average age of A, B and C was 51 years. If A is 3 years older than B and B is 3 years older then C then the present ages of A, B and C are ( in year)
Options- A. 61, 58 and 55
- B. 54, 51, and 48
- C. 55, 58, and 61
- D. 48, 51 and 54 Discuss
Correct Answer: 61, 58 and 55
- 2. In a marriage party 32% are women, 54% are men and there are 196 children. How many men are there in the marriage party?
Options- A. 756
- B. 448
- C. 332
- D. 324 Discuss
Correct Answer: 756
- 3. There are a total of 200 students in a school, of which 7/10th are boys. Find the number of girls in the school.
Options- A. 80
- B. 60
- C. 40
- D. 120 Discuss
Correct Answer: 60
- 4. A batsman makes a score of 95 runs in the 13th match and thus increases his average runs per match by 4. What is his average after the 13th match?
Options- A. 47
- B. 43
- C. 45
- D. 49 Discuss
Correct Answer: 47
- 5. In a class of 39 students there are 26 girls. The average weight of these girls is 42 Kgs and average weight of the full class is 48 kgs. What is the average weight (in kgs) of the boys of the class?
Options- A. 54
- B. 66
- C. 60
- D. 62 Discuss
Correct Answer: 60
- 6. A factory buys 7 machines. 2 MachineA, 4 MachineB and rest MachineC. Prices of the machines are Rs 56000, Rs 45000 and Rs 30000 respectively. Calculate the average cost of these machines.
Options- A. 46000
- B. 43666.66
- C. 41333.33
- D. 44500 Discuss
Correct Answer: 46000
- 7. Of the 5 numbers whose average is 72, the first is 1/8 times the sum of other 4. The first number is _____.
Options- A. 60
- B. 26
- C. 40
- D. 80 Discuss
Correct Answer: 40
- 8. The average weight of Shivshankar, Gopesh and Reena is 97 kg. If the average weight of Shivshankar and Gopesh is 93 kg and that of Gopesh and Reena is 82 kg, then the weight of Gopesh is
Options- A. 72
- B. 56
- C. 59
- D. 63 Discuss
Correct Answer: 59
- 9. The average revenues of 7 consecutive years of a company is Rs 79 lakhs. If the average of first 4 years is Rs 74 lakhs and that of last 4 years is Rs 86 lakhs, what is the revenue for the 4th year?
Options- A. Rs 87 lakhs
- B. Rs 89 lakhs
- C. Rs 85 lakhs
- D. Rs 83 lakhs Discuss
Correct Answer: Rs 87 lakhs
- 10. The average of a,b,c is 20 and that of b,c,d is 25; if d=30, then the value of a is
Options- A. 25
- B. 45
- C. 30
- D. 15 Discuss
Correct Answer: 15
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