Two numbers are respectively $$20\%$$ and $$50\%$$ of a third number. The percentage of the first number to the second is

Correct Answer: 40

Solution

Let the third number be $$N$$. Then the first and second numbers are $$0.2N$$ and $$0.5N$$ respectively. Thus the first as a percentage of the second is $$\frac{0.2N}{0.5N}\times100=40\%$$. Therefore the required percentage is $$40$$.

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