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MCQ

The average of 12 results is 15. The average of the first 5 results is 13.7 and that of the last 5 is 16.3. The average of the other two is

#### Options

15

15.2

14.8

15.5

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#### Solution

**15**

**Explanation:**

Total of 12 results = 12 x 15 = 180

Sum of the first five and last five results

= 5 x (13.7 + 16.3) = 150

Sum of the remaining two results

= 180 - 150 = 30

∴ Average of two results = 15

Concept: Average and Age

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