Average

1.		In an examination, the average marks was found to be 50. After deducting computational errors, the marks of the 100 candidates had to be changed from 90 to 60 and the average marks came down to 45. Total No of candidates who took the examination were:

450

600

500

400

2.		Arab's current average of runs is 64. He wanted it to be 66 and this could have been achieved if he had scored 22 runs more in all his innings put together. How many innings has he played till now?

10

11

12

15

3.		In a class, the average age of students is 11 years. The average age of the class increases by 1/4 years, if a 15 year old student joins the class. How many students were there in the class initially?

12

15

18

20

4.		The average weight in a class of 10 students increases by 3.5 kg when a teacher comes in place of one them weighing 65 kg. The weight of the teacher is:

80 kg

90 kg

100 kg

115 kg

5.		The average marks of Akrit decreased by one, when he replaced the subject in which he has scored 40 marks by the other two subjects in which he has scored 23 and 25 marks respectively. Later, when he also included 57 marks of Maths, the average marks increased by two. How many subjects were there initially?

18

16

12

15

6.		The average weight of Arpit, Bhuvan and Chandu is 84 kg. If Dheeraj joins the group, the average weight of the group becomes 80 kg. If another person Elena who weights is 3 kg more than Dheeraj Replaces Arpit, Then the average of Bhuvan, Chandu, Dheeraj and Elena becomes 79 kg. What is the weight of Arpit?

64

72

75

90

7.		The ratio of expenditure to saving is 3 : 2. If the income increases by 15% and the savings increases by 6%, then expenditure increases by:

25%

21%

18%

13.33%

8.		In an exam of 100 marks, the average marks of a class of 40 students is 76. If the top 3 scorers of the class leave, the average score falls down by 1. If the other two toppers except the highest one scored not more than 85, then what is the minimum score the topper can have?

86

90

95

98

9.		In the morning, a student reads 100 pages at the rate of 60 pages per hour. In the evening, she reads next 100 pages at the rate of 40 pages per hour. Her average rate of reading, in pages per hour is:

60

50

48

45

10.		In an examination, average marks for the entire class was 80. If 10% of the students scored 95 marks and 20% scored 90 marks, then, average marks of the remaining students of the class is:

80

75

70

90