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alltimeacheiver
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(1) x% of x% of y = x% less than y means (x/100)(x/100)y = y - y(x/100)alltimeacheiver wrote:Is x% of x% of y equal to x% less than y ?
(1) x(x + 100) = 10,000
(2) y(y + 1) = 1
x²y/10000 = y - xy/100
x²/10000 = 1 - x/100
x²/10000 + x/100 = 1
x² + 100x = 10000
x(x + 100) = 10000, same as statement 1.
So, (1) is SUFFICIENT.
(2) y² + y - 1 = 0, which is a quadratic equation.
From the steps done in statement 1, it can be easily seen that we may or may not obtain the above quadratic from x% of x% of y equal to x% less than y.
So, (2) is NOT SUFFICIENT.
The correct answer is A.
