Multiple Choice Questions

Of the four numbers whose average is 60 the first is 1 4th of the sum of the last three The fi...........

Quantitative Aptitude (CSC) Average

Of the four numbers whose average is 60, the first is 1/4th of the sum of the last three. The first number is ?

60.25

Let the first number be x,

Then, sum of the four numbers = x + 4x = 5x.

so, 5x/4 = 60 or x = (60 * 4) / 5 = 48.

Hence, option 2 is the correct answer.

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