The average of 5 numbers is 42. If two numbers are 38 and 44, find the average of the remaining three. MCQ with Answer and Explanation

The average of 5 numbers is 42. If two numbers are 38 and 44, find the average of the remaining three.

A. 41.33

B. 42

C. 42.67

D. 43

Answer: Option C

Sum=5×42=210. Sum of two=38+44=82. Sum of three=128. Avg=128/3=42.67.

This question belongs to: Maths Average

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Question #1 Report Error

If average of three numbers is 40. Two numbers average 35, third is

A. 50

B. 45

C. 55

D. 40

Correct Answer: Option A

Explanation:
Third = 3*40 - 2*35 =120 -70=50.

This question belongs to: Maths Average

Question #2 Report Error

The average age of 4 boys is 16 years. If their ages are in ratio 1:2:3:4, what is the age of the oldest boy?

A. 26

B. 24

C. 28

D. 25.6 years

Correct Answer: Option D

Explanation:
Sum =4×16=64. Ratio sum=10. Oldest = (4/10)×64 =25.6.

This question belongs to: Maths Average

Question #3 Report Error

What is the average of all numbers from 1 to 50 that are divisible by 7?

A. 29

B. 28

C. 28.5

D. 27.5

Correct Answer: Option B

Explanation:
Numbers: 7,14,21,28,35,42,49. Sum=196, count=7, avg=28.

This question belongs to: Maths Average