Question 83
Two numbers are 10% and 20% lesser than a third number respectively. By how much percent is the second number should be enhanced to make it equal to the first number?
Solution
Let those 3 numbers are x, y&z;
x = 0.9z & y = 0.8z
y = 0.8(x/0.9)
(0.9/0.8)y = x
1.125 y = x
so to make y equal to x, it should be enhanced by (1.125-1)*100% = 12.5%
So the answer is option C.
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