The average height of 4 boys is 1.5 m. If a girl of height 1.6 m joins, what is the new average? MCQ with Answer and Explanation

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The average height of 4 boys is 1.5 m. If a girl of height 1.6 m joins, what is the new average?

A. 1.52 m

B. 1.55 m

C. 1.53 m

D. 1.5 m

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum of 4 =4×1.5=6.0. Sum of 5=6.0+1.6=7.6. Average=7.6/5=1.52.

This question belongs to: Maths Average

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Question #1

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Average of 9 numbers 2490. If average of 6 is 2485, average of remaining 3?

A. 2500

B. 2498

C. 2495

D. 2505

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Correct Answer: Option A

Explanation:
Sum9=22410. Sum6=14910. Remaining=7500. Average=2500.

This question belongs to: Maths Average

Question #2

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The average of 4 numbers is 25. If the numbers are in the ratio 2:3:4:5, find the smallest number.

A. 14.29

B. 15

C. 14

D. 13.5

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Correct Answer: Option A

Explanation:
Sum=4×25=100. Ratio sum=14. Smallest = (2/14)×100 =14.285...≈14.29.

This question belongs to: Maths Average

Question #3

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The average of 1050,1400,1750 is

A. 1410

B. 1395

C. 1390

D. 1400

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Correct Answer: Option D

Explanation:
4200/3=1400.

This question belongs to: Maths Average

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