Question
The number of boys and girls in a class is 480 and 320,
respectively. When (x + 40) boys and x girls join, the ratio becomes 3:2. Find the value of ‘x’.Solution
According to the question,
(480 + x + 40) / (320 + x) = 3 / 2
Or, 2(520 + x) = 3(320 + x)
Or, 1040 + 2x = 960 + 3x
Or, x = 80
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