Average of 40,60,80,100 is MCQ with Answer and Explanation

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Average of 40,60,80,100 is

A. 65

B. 70

C. 75

D. 72

Answer: Option B

Solution (By JKSSB Mock Tests)

280/4=70.

This question belongs to: Maths Average

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Question #1

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Average of 9 numbers 1790. If average of 6 is 1785, average of remaining 3?

A. 1795

B. 1798

C. 1805

D. 1800

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Correct Answer: Option D

Explanation:
Sum9=16110. Sum6=10710. Remaining=5400. Average=1800.

This question belongs to: Maths Average

Question #2

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If average of 4 numbers is x and average of 6 other is y, average of all 10 is

A. (x + y)/2

B. (4x + 6y)/10

C. x + y

D. (2x + 3y)/5

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Correct Answer: Option B

Explanation:
Total = 4x + 6y. Average = (4x + 6y)/10.

This question belongs to: Maths Average

Question #3

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Average of 9 numbers 2340. If average of 6 is 2335, average of remaining 3?

A. 2350

B. 2348

C. 2345

D. 2355

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Correct Answer: Option A

Explanation:
Sum9=21060. Sum6=14010. Remaining=7050. Average=2350.

This question belongs to: Maths Average

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