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- Question
The mean of 21 observations (all different) is 40. If each observation greater than the median is increased by 21, then the mean of observations will become:
Options- A. 50
- B. 30
- C. 50.5
- D. 45
- Correct Answer
- 50
- 1. In a class of 60 students there are 30 girls. The average weight of these girls is 58 Kg and average weight of the full class is 63 kgs. What is the average weight of the boys of the class?
Options- A. 67
- B. 66
- C. 68
- D. 65 Discuss
- 2. In a match of 50 overs, team A?s average runs for first thirty overs was 4.5 runs/over while for the remaining 20 overs the average was 5.5 runs/over. Team B chased the target and lost by 10 runs. Find the average runs per over scored by team B. (team B played all the 50 overs).
Options- A. 4.4
- B. 5.2
- C. 4.7
- D. 4.6 Discuss
- 3. In a particular week the average number of people who visited the Park is 40. If we exclude the holidays then the average is increased by 16. Further if we exclude also the day on which the maximum number of 112 people visited the Park, then the average becomes 42. The number of holidays in the week is
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 4. In the first 39 overs of a cricket match, the run rate was 4.6 runs/over. Calculate the required run rate in the remaining 11 overs to reach the target of 252 runs?
Options- A. 7.2
- B. 5.7
- C. 6.3
- D. 6.6 Discuss
- 5. If a+1a=2 then the vealue of a5+1a5 will be
Options- A. 0
- B. 1
- C. 3
- D. 2 Discuss
- 6. The average of fruits offered in a temple in a week was 75. The average of fruits offered in six days excluding Tuesday was 72. How many fruits were offered on Tuesday?
Options- A. 90
- B. 93
- C. 72
- D. 92 Discuss
- 7. 19 persons went to a hotel for a combined dinner party. 13 of them spent Rs 79 each on their dinner and the rest spent Rs 4 more than the average expenditure of all the 19. What was the total money spent by them?
Options- A. 1628.4
- B. 1534
- C. 1492
- D. None of these Discuss
- 8. Nine students of a class contribute a certain sum of money. Seven of them gave Rs. 50 each and the other two gave respectively Rs. 50 and Rs. 90 more than the others. The average contribution of the class of 9 students is
Options- A. Rs. 70
- B. Rs. 50
- C. Rs. 100
- D. Rs. 120 Discuss
- 9. 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
- 10. 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
Average problems
Search Results
Correct Answer: 68
Correct Answer: 4.7
Explanation:
Total runs scored by team
Correct Answer: 2
Explanation:
Total number of people = 40 * 7 = 280
(7 -n)*(40+16) = 280
(7 -n)*56 = 280
7-n = 5
Number of holidays = 2
Correct Answer: 6.6
Correct Answer: 1
Correct Answer: 93
Correct Answer: None of these
Explanation:
Let the average expenditure of 19 people be x
?19x = 13 X 79 + 6 X (x+4)?19x = 13 X 79 + 6x +24
?x = 80.84
So, total money spent by them = 1536.07
Correct Answer: Rs. 70
Correct Answer: 61, 58 and 55
Correct Answer: 756
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