The average of 48,64,80 is MCQ with Answer and Explanation

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The average of 48,64,80 is

A. 62

B. 60

C. 70

D. 64

Answer: Option D

Solution (By JKExamLibrary)

192/3=64.

This question belongs to: Maths Average

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Question #1

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The average marks of 25 students is 70. If the marks of one student were misread as 80 instead of 60, find the correct average.

A. 70.0

B. 68.8

C. 69.2

D. 69.8

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Correct Answer: Option C

Explanation:
Total sum misread =25×70=1750. Correct sum =1750 -80 +60 =1730. Correct average =1730/25=69.2.

This question belongs to: Maths Average

Question #2

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A library has average 120 books per shelf for 10 shelves. If one shelf has 150, what is average of remaining?

A. 115

B. 118

C. 120

D. 116.67

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Correct Answer: Option D

Explanation:
Total=1200. Remaining=1050 for 9. 1050/9≈116.67.

This question belongs to: Maths Average

Question #3

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Average of 30,60,90,120 is

A. 70

B. 85

C. 75

D. 80

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Correct Answer: Option C

Explanation:
300/4=75.

This question belongs to: Maths Average

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