The average height of 5 students is 150 cm. If a new student of height 160 cm joins, what is the new average? MCQ with Answer and Explanation

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The average height of 5 students is 150 cm. If a new student of height 160 cm joins, what is the new average?

A. 155 cm

B. 151 cm

C. 152 cm

D. 151.67 cm

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum of 5 =5×150=750. Sum of 6 =750+160=910. New average =910/6=151.67.

This question belongs to: Maths Average

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Question #1

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The average of 4 numbers is 22. If each number is increased by 3, what is the new average?

A. 28

B. 22

C. 25

D. 19

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Correct Answer: Option C

Explanation:
New average =22+3=25.

This question belongs to: Maths Average

Question #2

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Average of 9 numbers 1590. If average of 6 is 1585, average of remaining 3?

A. 1595

B. 1598

C. 1605

D. 1600

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Correct Answer: Option D

Explanation:
Sum9=14310. Sum6=9510. Remaining=4800. Average=1600.

This question belongs to: Maths Average

Question #3

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Find the average of the first 5 multiples of 7.

A. 20

B. 21

C. 19.5

D. 22

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Correct Answer: Option B

Explanation:
Multiples:7,14,21,28,35 sum=105, count=5, avg=21.

This question belongs to: Maths Average

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