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Mean

The mean of a...

Question

The mean of a set of 10 numbers is 20. If each number is first multiplied by 2 and then increased by 5, then what is the mean of new numbers?

A

20

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B

25

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C

40

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D

45

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Solution

The correct option is D 45
Mean of the new numbers $= 20 \times 2 + 5 = 45$

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