Question

The average of n numbers is 64. If each of 56% of the numbers is increased by 15 and each of the remaining numbers is decreased by 10, then the new average of the numbers will be

A 68 Correct Answer Incorrect Answer
B 62.3 Correct Answer Incorrect Answer
C 67.5 Correct Answer Incorrect Answer
D 63.4 Correct Answer Incorrect Answer
E Cannot be determined Correct Answer Incorrect Answer

Solution

Average = 64 + ((56 x 15 - 44 x 10)/100) = 64 + 4 = 68

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