Question 101

The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest ?

Solution

Average of 12 numbers = 15

=> Sum of 12 numbers = $$15\times12=180$$

Similarly, sum of first two = $$14\times2=28$$

Thus, sum of rest of the numbers = $$180-28=152$$

=> Average of 10 numbers = $$\frac{152}{10}=\frac{76}{5}=15\frac{1}{5}$$

=> Ans - (A)

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