Question 10

The average of 12 numbers is 35. If four numbers 20, 27, 15 and 29 are removed then what will be the average of remaining numbers?

Solution

Average of 12 numbers = 35

=> Sum of numbers = $$35\times12=420$$

Sum of the 4 removed numbers = $$20+27+15+29=91$$

=> New average of 8 numbers = $$\frac{(420-91)}{8}$$

= $$\frac{329}{8}=41.125$$

=> Ans - (A)

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