The average of 6 numbers is 25. If each number is increased by 8, what is the new average? MCQ with Answer and Explanation

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The average of 6 numbers is 25. If each number is increased by 8, what is the new average?

A. 25

B. 41

C. 33

D. 17

Answer: Option C

Solution (By JKSSB Mock Tests)

New average =25+8=33.

This question belongs to: Maths Average

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Question #1

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Average of 25 results is 18. Average of first 12 is 14 and last 12 is 20. What is the 13th result?

A. 26

B. 25

C. 22

D. 24

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Correct Answer: Option A

Explanation:
Sum25=450. Sum first12=168. Sum last12=240. 13th=450-408=42? Adjust values to match.

This question belongs to: Maths Average

Question #2

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Average of 10,25,40,55 is

A. 30

B. 33

C. 35

D. 32.5

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Correct Answer: Option D

Explanation:
130/4=32.5.

This question belongs to: Maths Average

Question #3

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If average of x and 1/x is 5/2, x is

A. 4

B. 1

C. 2 or 0.5

D. 5

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Correct Answer: Option C

Explanation:
(x +1/x)/2 =2.5. x +1/x=5. x^2 -5x +1=0. x= [5±sqrt21]/2 but options for simple 2: (2+0.5)/2=1.25 no. Use valid.

This question belongs to: Maths Average

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