Average of 10,15,20,25,30 is MCQ with Answer and Explanation

Average of 10,15,20,25,30 is

A. 20

B. 25

C. 18

D. 22

Answer: Option A

100/5=20.

This question belongs to: Maths Average

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Question #1 Report Error

Average income of 10 persons is Rs. 5000. If one leaves, average becomes Rs. 4800. Income of the person who left?

A. 6500

B. 7000

C. 7200

D. 6800

Correct Answer: Option D

Explanation:
Sum10=50000. Sum9=43200. Left=6800.

This question belongs to: Maths Average

Question #2 Report Error

The average of 6 numbers is 25. If 5 numbers average 24, the 6th is

A. 30

B. 26

C. 28

D. 29

Correct Answer: Option D

Explanation:
6th =150 -120=30? Sum6=150. 5*24=120. 30.

This question belongs to: Maths Average

Question #3 Report Error

Average marks of 25 students 60. If marks of one 80 included instead of 40, new average?

A. 60

B. 61

C. 62

D. 61.6

Correct Answer: Option D

Explanation:
Increase 40, /25=1.6, new 61.6.

This question belongs to: Maths Average