Average - Mock Test 3

Question 21

The average weight of boys in a class is 30 kg and the average weight of girls in the same class is 20kg. If the average weight of the whole class is 23.25 kg, what could be the possible strength of boys and girls respectively in the same class?

A) 14 and 16 B) 13 and 27 C) 17 and 27 D) None of these

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Question 22

A fruit seller sells 40% of his mangoes at Rs. 62/kg , 25% at Rs. 28 per kg and the rest at Rs. 40 per kg. What is the average selling price of one mango?

A) Rs.22.4 B) Rs.42.2 C) Rs.45.8 D) Rs.52.4

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Question 23

The average of five numbers is 34.4. The average of the first and the second number is 46.5. The average of the fourth and the fifth number is 18. What is the third number?

A) 45 B) 46 C) 42 D) None of these

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Question 24

The average of 17 results is 60. If the average of first 9 results is 57 and that of the last 9 results is 65, then what will be the value of 9th result?

A) 39 B) 78 C) 117 D) 156

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Question 25

The average of 5 consecutive even numbers A, B, C, D and E is 106. What is the product of B and D ?

A) 11440 B) 11024 C) 10608 D) none of these

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Question 26

The average age of a man and his son is 40 yr. The ratio of their ages is 7:3 respectively. What is the man’s age ?

A) 70 yr B) 63 yr C) 56 yr D) 49 yr

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