Average of 7 numbers 55. If average of 4 is 50, average of remaining 3? MCQ with Answer and Explanation

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Average of 7 numbers 55. If average of 4 is 50, average of remaining 3?

A. 58

B. 62.33

C. 65

D. 60

Answer: Option B

Solution (By JKExamLibrary)

Sum7=385. Sum4=200. Remaining=185. Average≈61.67 approx 62.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 9 numbers 590. If average of 6 is 585, average of remaining 3?

A. 598

B. 600

C. 595

D. 605

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Correct Answer: Option B

Explanation:
Sum9=5310. Sum6=3510. Remaining=1800. Average=600.

This question belongs to: Maths Average

Question #2 Report Error

Average of 12 numbers 45. If average of 9 is 42, average of remaining 3?

A. 48

B. 54

C. 50

D. 52

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Correct Answer: Option D

Explanation:
Sum12=540. Sum9=378. Remaining=162. Average=54.

This question belongs to: Maths Average

Question #3 Report Error

A shopkeeper sold 12 pens at Rs. 15 each. Average selling price of all pens if he sold 8 more at Rs. 12 each?

A. 13

B. 13.8

C. 13.5

D. 14

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Correct Answer: Option B

Explanation:
Total revenue = 12×15 + 8×12 = 180 + 96 = 276. Total pens=20. Average=276/20=13.8.

This question belongs to: Maths Average

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