Quantitative Apitude-Arithmetic (Average)
Quantitative Apitude-Arithmetic (Average)
51. After replaceing an old member by a new member, It was found that the average age of five members of a club is the same as it was 3 years ago. What is the difference between the ages on the replaed and the new member ?
- 15 years
- 8 years
- 4 years
- 2 years
52. The average of a class is 15.8 years. The average age of the boys in the class is 16.4 years while that of the girls is 15.4 years. What is the ratio of boys to girls in the class ?
- 1:2
- 3:4
- 3:5
- None of these
53. The average age of 3 children in a family is 20% of the average age of the father and the eldest child.The total age of the mother and the youngest child is 39 years. If the father's age is 26 years, what is the age of second child ?
- 15 years
- 18 years
- 20 years
- Can not be determined
54. In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 overs to reach the target of 282 runs?
- 6.25
- 6.5
- 6.75
- 7
55. A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6500?
- Rs. 4991
- Rs. 5991
- Rs. 6001
- Rs. 6991
56. The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
- 0
- 1
- 10
- 19
57. The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?
- 76 kg
- 76.5 kg
- 85 kg
- Data inadequate
58. The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team?
- 23 years
- 24 years
- 25 years
- None of these
59. The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is:
- 3500
- 4000
- 4050
- 5000
60. The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:
- 35 years
- 40 years
- 50 years
- None of these