Average of 12 numbers 2420. If average of 8 is 2415, average of remaining 4? MCQ with Answer and Explanation

Question

Share Report Error

Average of 12 numbers 2420. If average of 8 is 2415, average of remaining 4?

A. 2432

B. 2428

C. 2425

D. 2430

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=29040. Sum8=19320. Remaining=9720. Average=2430.

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 9 numbers 2590. If average of 6 is 2585, average of remaining 3?

A. 2605

B. 2595

C. 2598

D. 2600

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Sum9=23310. Sum6=15510. Remaining=7800. Average=2600.

This question belongs to: Maths Average

Question #2

The average age of 8 students is 15 years. If the teacher's age is included, the average becomes 18 years. What is the teacher's age?

A. 40

B. 42

C. 39

D. 45

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Total age of students = 8×15 = 120. Total age including teacher = 9×18 = 162. Teacher's age = 162−120 = 42.

This question belongs to: Maths Average

Question #3

Average of 15 numbers 45. If one number 60 is excluded, new average?

A. 45

B. 43

C. 46

D. 44

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Sum15=675. Remaining=615/14≈43.93 approx 44.

This question belongs to: Maths Average

Explore All Average MCQs