Average of 9 numbers 2540. If average of 6 is 2535, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 2540. If average of 6 is 2535, average of remaining 3?

A. 2545

B. 2548

C. 2550

D. 2555

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum9=22860. Sum6=15210. Remaining=7650. Average=2550.

This question belongs to: Maths Average

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Question #1

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A student scored 75, 80, 85 in three tests. What marks should he score in fourth test to make average 82?

A. 85

B. 90

C. 92

D. 88

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Correct Answer: Option D

Explanation:
Total for 4 tests =4×82=328. Sum of three=240. Required=328-240=88.

This question belongs to: Maths Average

Question #2

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Average of 40 students is 50. If average of 10 is 60, average of remaining 30?

A. 46.67

B. 47

C. 45

D. 48

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Correct Answer: Option A

Explanation:
Total=2000. 10=600. Remaining=1400. 1400/30≈46.67.

This question belongs to: Maths Average

Question #3

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Average of 6 numbers 45. If average of 4 is 40, average of remaining 2?

A. 55

B. 50

C. 60

D. 52.5

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Correct Answer: Option A

Explanation:
Sum6=270. Sum4=160. Remaining=110. Average=55.

This question belongs to: Maths Average

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