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The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest?
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- 15
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15 1 5 - 14
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14 1 5
Correct Option: B
Given , Average of 12 numbers = 15
Sum of 12 numbers = 15 × 12 = 180
and the average of the first two numbers = 14
Sum of first 2 numbers = 14 × 2 = 28
∴ Sum of remaining 10 numbers = Sum of 12 numbers – Sum of first 2 numbers
Sum of remaining 10 numbers = 180 - 28 = 152
| ∴ Required average = | ||
| 10 |
| Required average = | = 15 | ||
| 5 | 5 |
