Question 57

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

Solution

The average of the three numbers is 60

The first number is one fourths of the sum of the others.

or 4p = q + r

$$ \frac {p + q + r}{3}$$ = 60

So, 5p/3 = 60

p = 180/5 = 36

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