Average problems
- 1. The average of 21 numbers is 12. The average of the first 11 numbers is 9 and the average of the last 11 numbers is 15. What is the value of the middle number?
Options- A. 10
- B. 11
- C. 12
- D. 13 Also asked in: Bank Exams
Correct Answer: 12
- 2. 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 Also asked in: Bank Exams
Correct Answer: 60
- 3. 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 Also asked in: Bank Exams
Correct Answer: 47
- 4. 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 Also asked in: Bank Exams
Correct Answer: 60
- 5. A factory buys 7 machines. 2 Machine A, 2 Machine B and rest Machine C. Prices of the machines are Rs 95000, Rs 75000 and Rs 43000 respectively. Calculate the average cost of these machines?
Options- A. 71000
- B. 67000
- C. 75000
- D. 65500 Also asked in: Bank Exams
Correct Answer: 67000
- 6. 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 Also asked in: Bank Exams
Correct Answer: 40
- 7. 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 Also asked in: Bank Exams
Correct Answer: 59
- 8. 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 Also asked in: Bank Exams
Correct Answer: Rs 87 lakhs
- 9. 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 Also asked in: Bank Exams
Correct Answer: 15
- 10. The average monthly salary of 19 members of a group is Rs. 16000. If one more members whose monthly salary is Rs. 20000 has joined the group, then the average salary of the group is
Options- A. Rs.18250
- B. Rs.16200
- C. Rs.18000
- D. Rs.16250 Also asked in: Bank Exams
Correct Answer: Rs.16200
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