1. The average of 45 numbers was found to be 54. Later, it was detected that 65 was misread as 38. Find the correct average of the given numbers.
A) 53.4 B) 54.6 C) 54.9 D) 54.8
2. 40 students of a college went to a hotel. 39 of them spent Rs.195 each on their meal and the 40th student spent Rs.78 more than the average of all the 40. Find the total money (in Rs.) spent by them?
A) 7580 B) 7780 C) 7880 D) 7680
3. In a group of 38 students, the average weight was 21.5 kg. When 4 students left the group, the average came down to 18.75 kg. What was the average weight (in kg) of those 4 students?
A) 42.655 B) 45.675
C) 43.575 D) 44.875
4. In Rs.300, B buys 15 pens for Rs.6 each, 16 erasers for Rs.5 each and some pencils for Rs.13 each. What is the average price per item in Rs. (Round of two decimals)?
A) 7.31 B) 7.86 C) 6.95 D) 6.57
5. The average weight of 24 persons in increased by 2.75 kg when one of them whose weight is 47 kg is replaced by a new man. The weight of the new man (in kgs) is:
A) 111 B) 113 C) 115 D) 117
6. The average monthly income of the father and mother is Rs.6,500. The average monthly income of the mother and her son is Rs.7,400. The average monthly income of the father and his son is Rs.12500. Find the monthly income (in Rs) of the son.
A) 13400 B) 15400
C) 16800 D) 12200
7. There are 16 students in a class. Their average weight is 42 kg. When one student leaves the class, the average weight is 40.5 kg. What is the weight of the student who left the class (where kg means kilogram)?
A) 60.5 B) 62.5 C) 63 D) 64.5
8. The average weight of all the 11 players of the Indian Cricket Team is 58 kg. If the average of first six lightest players is 53 kg and that of the six heaviest players is 65 kg, then the average weight (in kgs) of the player who lies in the sixth position when all the 11 players are arranged in the order of increasing or decreasing weight is:
A) 58 B) 64 C) 68 D) 70
9. There were five sections in the XYZ paper. The average score of Rani in the first 3 sections was 85 and the average in the last 3 sections was 99. If her average for the entire paper was 95, then her score in the third section was:
A) 77 B) 79 C) 81 D) 83
10. A cricketer scored some runs in his continuous 11 innings. He scored 150 runs in his 12th innings and increased his average by 11 runs. What was the average of his runs at the end of 12th innings?
A) 33 B) 31 C) 27 D) 29
11. The average temperature on Monday, Tuesday and Wednesday is 43°C. The average temperature on Tuesday, Wednesday and Thursday is 45.5°C. If the average temperature on Monday and Thursday is 20.75°C. The average temperature on Thursday is:
A) 22.5°C B) 24.5°C
C) 25.5°C D) 26.5°C
12. In a class of 60 students, 20 are girls. The average weight of the boys in the class is 40 kg, while that of all the girls is 35 kg. What is the average weight (in kg) of the entire class (correct to two decimal places)?
A) 40.67 B) 33.33 C) 36.67 D) 38.33
13. The average weight of a team of 20 people was calculated to be 59.8 kg and it was later discovered that one weight was misread as 68 kg instead of 77 kg. The correct average weight is:
A) 58.25 B) 60.25 C) 61.25 D) 59.25
14. The average weight of 15 persons in increased by 1.2 kg when one of them whose weight is 51 kg is replaced by a new man. The weight of the new man (in kgs) is :
A) 66 B) 69 C) 71 D) 75
Key
1-B 2-C 3-D 4-A 5-B 6-A 7-D 8-D 9-A 10-D 11-B 12-D 13-B 14-B
