The average of 8 numbers is 30. If one number is 40, find the average of the remaining 7. MCQ with Answer and Explanation

Question

Share Report Error

The average of 8 numbers is 30. If one number is 40, find the average of the remaining 7.

A. 29

B. 28

C. 28.57

D. 27.5

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum=8×30=240. Remaining sum=240-40=200. Avg=200/7=28.57.

This question belongs to: Maths Average

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Average Questions

Question #1

Average of 25 consecutive numbers is 50. What is the smallest?

A. 40

B. 37

C. 39

D. 38

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Middle 13th =50. Smallest=50 -12=38.

This question belongs to: Maths Average

Question #2

Average of 30,60,90,120 is

A. 85

B. 70

C. 80

D. 75

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
300/4=75.

This question belongs to: Maths Average

Question #3

Average of 9,18,27,36,45,54 is

A. 33

B. 31.5

C. 30

D. 32

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
189/6=31.5.

This question belongs to: Maths Average

Explore All Average MCQs