The average of 9 numbers is 35. If average of first 4 is 32, average of last 6 is 37, the 4th number? MCQ with Answer and Explanation

The average of 9 numbers is 35. If average of first 4 is 32, average of last 6 is 37, the 4th number?

A. 35

B. 36

C. 34

D. 33

Answer: Option D

Sum9=315. Sum1-4=128. Sum4-9=222. 4th=128+222-315=35.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 12 numbers 1670. If average of 8 is 1665, average of remaining 4?

A. 1682

B. 1678

C. 1675

D. 1680

Correct Answer: Option D

Explanation:
Sum12=20040. Sum8=13320. Remaining=6720. Average=1680.

This question belongs to: Maths Average

Question #2 Report Error

The average of 5 numbers is 20. If each number is divided by 2, what is the new average?

A. 5

B. 10

C. 15

D. 20

Correct Answer: Option B

Explanation:
New average =20/2=10.

This question belongs to: Maths Average

Question #3 Report Error

Average of 15 numbers 2060. If average of 9 is 2055, average of remaining 6?

A. 2070

B. 2068

C. 2067.5

D. 2065

Correct Answer: Option C

Explanation:
Sum15=30900. Sum9=18495. Remaining=12405. Average=2067.5.

This question belongs to: Maths Average