Average height of 30 boys 160 cm. If 5 more with average 170 cm, new average? MCQ with Answer and Explanation

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Average height of 30 boys 160 cm. If 5 more with average 170 cm, new average?

A. 161.43

B. 163

C. 162

D. 160

Answer: Option A

Solution (By JKExamLibrary)

Total old=4800. New=850. Total 5650 /35≈161.43.

This question belongs to: Maths Average

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Question #1 Report Error

Average of 30 numbers 25. If each number is increased by 10%, new average?

A. 26

B. 27.5

C. 30

D. 25

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Correct Answer: Option B

Explanation:
Increased by 10%, average 27.5.

This question belongs to: Maths Average

Question #2 Report Error

Average of 135,180,225 is

A. 180

B. 175

C. 190

D. 170

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Correct Answer: Option A

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540/3=180.

This question belongs to: Maths Average

Question #3 Report Error

Average of 9 numbers 65. If average of 6 is 60, average of remaining 3?

A. 75

B. 72

C. 80

D. 70

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Correct Answer: Option A

Explanation:
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