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Mean

The mean of f...

Question

The mean of first three terms is 14 and mean of next two terms is 18. The mean of all the five terms is

A

14.5

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B

15.0

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C

15.2

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D

15.6

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Solution

The correct option is D
15.6

Mean of all the terms= $\frac{3 \times 14 + 2 \times 18}{5}$
$= \frac{42 + 36}{5} = \frac{78}{5} = 15.6$

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