The average marks of 22 students is 65. If a student with 75 marks leaves and another with 85 joins, what is the new average? MCQ with Answer and Explanation

Question

The average marks of 22 students is 65. If a student with 75 marks leaves and another with 85 joins, what is the new average?

A. 65.45

B. 65.5

C. 65.2

D. 66.0

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum=22×65=1430. Remove 75: 1430-75=1355. Add 85: 1355+85=1440. New avg=1440/22=65.45.

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

Share Report

The average of 9 numbers is 50. If one number is 70, find the average of the remaining 8.

A. 48

B. 46.5

C. 47.5

D. 47

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Sum=9×50=450. Remaining sum=450-70=380. Avg=380/8=47.5.

This question belongs to: Maths Average

Question #2

Share Report

Average of 8 numbers 2150. If average of 5 is 2145, average of remaining 3?

A. 2155

B. 2157

C. 2158.33

D. 2160

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Sum8=17200. Sum5=10725. Remaining=6475. Average≈2158.33.

This question belongs to: Maths Average

Question #3

Share Report

Average of 15,30,45,60 is

A. 37.5

B. 40

C. 38

D. 35

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Sum=150. Average=37.5.

This question belongs to: Maths Average

Explore All Average MCQs