Average of 9 numbers 1390. If average of 6 is 1385, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 1390. If average of 6 is 1385, average of remaining 3?

A. 1395

B. 1400

C. 1405

D. 1398

Answer: Option B

Solution (By JKSSB Mock Tests)

Sum9=12510. Sum6=8310. Remaining=4200. Average=1400.

This question belongs to: Maths Average

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Question #1

Average of 1,3,5,...,19 (odd numbers).

A. 10

B. 9

C. 11

D. 12

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Correct Answer: Option A

Explanation:
10 terms, average 10.

This question belongs to: Maths Average

Question #2

Average of 40 numbers 65. If 15 numbers average 70, average of remaining 25?

A. 62

B. 64

C. 60

D. 63

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Correct Answer: Option A

Explanation:
Total=2600. 15=1050. Remaining=1550/25=62.

This question belongs to: Maths Average

Question #3

Average of 9 numbers 2140. If average of 6 is 2135, average of remaining 3?

A. 2145

B. 2148

C. 2155

D. 2150

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Correct Answer: Option D

Explanation:
Sum9=19260. Sum6=12810. Remaining=6450. Average=2150.

This question belongs to: Maths Average

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