Average weight of 20 girls 45 kg. If 5 boys average 55 kg included, new average for 25? MCQ with Answer and Explanation

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Average weight of 20 girls 45 kg. If 5 boys average 55 kg included, new average for 25?

A. 46

B. 47

C. 50

D. 48

Answer: Option B

Solution (By JKSSB Mock Tests)

Girls 900. Boys 275. Total 1175/25=47.

This question belongs to: Maths Average

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Question #1

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The average of 12 numbers is 18. If each number is increased by 5, what is the new average?

A. 28

B. 18

C. 23

D. 13

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Correct Answer: Option C

Explanation:
New average =18+5=23.

This question belongs to: Maths Average

Question #2

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The average weight increases by 1 kg when one of 60 kg is replaced by new. For 10 people, new weight?

A. 65

B. 75

C. 80

D. 70

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Correct Answer: Option D

Explanation:
Increase 10*1=10. New weight=60+10=70 kg.

This question belongs to: Maths Average

Question #3

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Average of 15 numbers 2310. If average of 9 is 2305, average of remaining 6?

A. 2320

B. 2315

C. 2318

D. 2317.5

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Correct Answer: Option D

Explanation:
Sum15=34650. Sum9=20745. Remaining=13905. Average=2317.5.

This question belongs to: Maths Average

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