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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 ?
Answer & Solution
Correct Answer:
Option
A
Average of twelve number = 15
Sum of twelve number = 15 × 12 = 180
Average of first two number = 14
Sum of first two number = 14 × 2 = 28
Sum of first two + Sum of rest = 180
Sum of rest = 180- 28 = 152
Average of rest = $$\frac{152}{10}$$ = $$15\frac{1}{5}$$
Sum of twelve number = 15 × 12 = 180
Average of first two number = 14
Sum of first two number = 14 × 2 = 28
Sum of first two + Sum of rest = 180
Sum of rest = 180- 28 = 152
Average of rest = $$\frac{152}{10}$$ = $$15\frac{1}{5}$$
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