Average of 15 numbers 960. If average of 9 is 955, average of remaining 6? MCQ with Answer and Explanation

Average of 15 numbers 960. If average of 9 is 955, average of remaining 6?

A. 967.5

B. 965

C. 970

D. 968

Answer: Option A

Sum15=14400. Sum9=8595. Remaining=5805. Average=967.5.

This question belongs to: Maths Average

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Question #1 Report Error

The average salary of 10 employees is Rs 5000. If a new employee joins with salary Rs 7000, what is the new average?

A. 5150

B. 5220

C. 5200

D. 5181.82

Correct Answer: Option D

Explanation:
Total =10×5000=50000. New total =57000. New average =57000/11=5181.82.

This question belongs to: Maths Average

Question #2 Report Error

If average of 6 numbers is 30 and average of 3 is 25, average of remaining 3?

A. 35

B. 32

C. 36

D. 30

Correct Answer: Option A

Explanation:
Sum6=180. Sum3=75. Remaining=105. Average=35.

This question belongs to: Maths Average

Question #3 Report Error

The average of 6 numbers is 23. If two numbers are 18 and 26, find the average of the remaining four.

A. 23.5

B. 23

C. 22.5

D. 24

Correct Answer: Option A

Explanation:
Sum=6×23=138. Sum of two=18+26=44. Sum of four=94. Avg=94/4=23.5.

This question belongs to: Maths Average