Average - Mock Test 2

Question 11

Eight consecutive numbers are given. If the average of the two numbers that appear in the middle is 6, then the sum of the eight given numbers is?

A) 54 B) 64 C) 35 D) 48

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Question 12

The average of 10 numbers is calculated as 15. It is discovered later on that while calculating the average one number, namely 36, was wrongly read as 26. The correct average is?

A) 20 B) 18 C) 16 D) 14

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Question 13

The average of seven consecutive positive integers is 26. The smallest of these integers is?

A) 21 B) 23 C) 25 D) 26

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Question 14

Half of Sonu’s monthly income is equal to four-seventh of Rajiv’s monthly income. Rajni’s monthly income is 32000 which is double the monthly income of Sonu. What is Rajiv's monthly income?

A) 16000 B) 4571 C) 14000 D) Cannot be determined

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Question 15

The average mark secured by 36 students was 52. But it was discovered that an item 64 was misread as 46. What is the correct mean of marks?

A) 54 B) 53.5 C) 53 D) 52.5

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Question 16

The average weight of 15 girls was recorded as 54 kg. If the weight of the teacher was added, the average increased by two kg. What was the teacher's weight?

A) 75kg B) 95kg C) 78kg D) 86kg

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Question 17

The total of the ages of 75 class girls is 1050, the average age of 25 of them is 12 yr and that of another 25 is 16 yr. Find the average age of the remaining girls.?

A) 12yr B) 13yr C) 14yr D) 15yr

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Question 18

What is the average of the following numbers 112, 102, 133, 116 and 127 ?

A) 108 B) 118 C) 128 D) 110

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Question 19

The ratio of ducks and frogs in a pond is 37: 39 respectively. The average number of ducks and frogs in the pond is 152. What is the number of frogs in the pond?

A) 148 B) 152 C) 156 D) 144

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Question 20

The average of 8 consecutive natural numbers is 38.5. What is the largest of these 8 numbers?

A) 41 B) 39 C) 42 D) 45

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