Average age of 40 people 35 years. If 10 more with average 40 join, new average? MCQ with Answer and Explanation

Average age of 40 people 35 years. If 10 more with average 40 join, new average?

A. 36.25

B. 36

C. 37

D. 35.5

Answer: Option B

Total=1400+400=1800. /50=36.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 5 numbers is 36. If one number is 42, find the average of the remaining 4.

A. 33.75

B. 34.5

C. 34

D. 35

Correct Answer: Option B

Explanation:
Sum=5×36=180. Remaining sum=180-42=138. Avg=138/4=34.5.

This question belongs to: Maths Average

Question #2 Report Error

Average of 15 numbers 460. If average of 9 is 455, average of remaining 6?

A. 467.5

B. 465

C. 470

D. 468

Correct Answer: Option A

Explanation:
Sum15=6900. Sum9=4095. Remaining=2805. Average=467.5.

This question belongs to: Maths Average

Question #3 Report Error

The average of 960,1280,1600 is

A. 1270

B. 1280

C. 1290

D. 1275

Correct Answer: Option B

Explanation:
3840/3=1280.

This question belongs to: Maths Average