Average of 12 numbers 1370. If average of 8 is 1365, average of remaining 4? MCQ with Answer and Explanation

Question

Share Report Error

Average of 12 numbers 1370. If average of 8 is 1365, average of remaining 4?

A. 1382

B. 1380

C. 1375

D. 1378

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum12=16440. Sum8=10920. Remaining=5520. Average=1380.

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 age of 6 students is 12 years. If the teacher's age is included, the average becomes 15 years. What is the teacher's age?

A. 27

B. 33

C. 30

D. 36

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Sum of 6 students' ages = 6×12=72. Sum of 7 persons = 7×15=105. Teacher's age = 105-72=33.

This question belongs to: Maths Average

Question #2

Share Report

Average of 15 numbers 2660. If average of 9 is 2655, average of remaining 6?

A. 2670

B. 2667.5

C. 2668

D. 2665

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Sum15=39900. Sum9=23895. Remaining=16005. Average=2667.5.

This question belongs to: Maths Average

Question #3

Share Report

If average of 4 numbers is x and average of 6 other is y, average of all 10 is

A. (4x + 6y)/10

B. (2x + 3y)/5

C. (x + y)/2

D. x + y

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Total = 4x + 6y. Average = (4x + 6y)/10.

This question belongs to: Maths Average

Explore All Average MCQs