Of the four numbers, w

Question

Of the four numbers, whose average is 60, the first is one-fourth of the sum of the last three. The first number is:

Options:

A . 15

B . 45

C . 48

D . 60.25

Answer: Option C

Let the first number be `x`

Then sum of the four numbers = `x + 4x + 5x`

So`(5x)/(4)` = 60 of `x` = `((60 xx4)/(5))`= 48

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