Average - Comprehensive Mock Test 1

Question 1 Medium

Of the 5 numbers whose average is 72, the first is 1/8 times the sum of other 4. The first number is _______

A) 60 B) 26 C) 40 D) 80

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Question 2 Medium

Find the average of all the numbers between 6 and 34 which are divisible by 5?

A) 18 B) 20 C) 24 D) 30

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Question 3 Medium

The average of the first 5 prime numbers greater than 60 is ?

A) 72 B) 70.2 C) 71.7 D) 72.24

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Question 4 Easy

Find the average of first 4 multiples of 5?

A) 11.5 B) 11 C) 12 D) 12.5

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Question 5 Easy

Find the average of first 30 natural number?

A) 20 B) 15.5 C) 25 D) 18

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Question 6 Medium

Find the average of all prime numbers between 35 and 60?

A) 40 B) 50 C) 46.7 D) 45

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Question 7 Hard

The average of the test scores of a class of p students is 70, and the average of the test scores of a class of q students is 92. When the scores of both classes are combined, the average is 86. What is the value of (p/q)?

A) 2/7 B) 3/8 C) 4/11 D) None of the above

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Question 8 Hard

A school has four sections in a class X having 40, 35, 45 and 42 students. The mean marks obtained in a Chemistry test are 50, 60, 55 and 45, respectively for the four sections. Then, the overall average of the marks per student is?

A) 51.75 B) 51.95 C) 52.25 D) 52.75

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Question 9 Hard

A boat goes a certain distance at 40 km/hr and comes back the same distance at 24 km/hr. What is the average speed (in km/hr) for the total journey?

A) 32 B) 28 C) 34 D) 30

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Question 10 Medium

The average of 27 numbers is 60. If one number is changed from 28 to 82 the average is?

A) 56 B) 58 C) 62 D) 64

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