If average of three numbers is 40. Two numbers average 35, third is MCQ with Answer and Explanation

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If average of three numbers is 40. Two numbers average 35, third is

A. 40

B. 55

C. 50

D. 45

Answer: Option C

Solution (By JKSSB Mock Tests)

Third = 3*40 - 2*35 =120 -70=50.

This question belongs to: Maths Average

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Question #1

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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. 72.5

B. 71.5

C. 73

D. 72

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Correct Answer: Option A

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

This question belongs to: Maths Average

Question #2

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Average of multiples of 8 from 8 to 64 is

A. 32

B. 36

C. 30

D. 40

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Correct Answer: Option B

Explanation:
(8+64)/2=36.

This question belongs to: Maths Average

Question #3

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The average of 1560,2080,2600 is

A. 2070

B. 2075

C. 2080

D. 2090

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Correct Answer: Option C

Explanation:
6240/3=2080.

This question belongs to: Maths Average

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