The average of 1260,1680,2100 is MCQ with Answer and Explanation

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The average of 1260,1680,2100 is

A. 1690

B. 1670

C. 1675

D. 1680

Answer: Option D

Solution (By JKExamLibrary)

5040/3=1680.

This question belongs to: Maths Average

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Question #1

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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. 70

C. 75

D. 80

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Correct Answer: Option B

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

This question belongs to: Maths Average

Question #2

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Average of 12 numbers 1420. If average of 8 is 1415, average of remaining 4?

A. 1430

B. 1432

C. 1425

D. 1428

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Correct Answer: Option A

Explanation:
Sum12=17040. Sum8=11320. Remaining=5720. Average=1430.

This question belongs to: Maths Average

Question #3

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The average marks of 25 students is 72. If a student with 60 marks leaves, what is the new average?

A. 72

B. 73

C. 71.5

D. 72.5

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Correct Answer: Option D

Explanation:
Sum=25×72=1800. New sum=1800-60=1740. New avg=1740/24=72.5.

This question belongs to: Maths Average

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