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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