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Quantitative Aptitude

Averages

The average o...

Question

The average of four numbers is 24.5. Of the four numbers, the first is 1.5 times the second, the second is 1/3rd of the third, and the third is 2 times the fourth number. Then what is smallest of all those numbers?

A

12

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B

13

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C

14

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D

15

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Solution

The correct option is C 14
First = 1.5x Second = x Third = 3x
Fourth = 1.5x
Average = 24.5 = (1.5x+x+3x+1.5x)/4
x = 14

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