Math problem of the day

Question:
If 45% of a number is 48 more than 25% of the same number, what is the number?

Answers variants: A. 200   B. 225   C. 240   D. 245   E. 248


Correct answer: C. 240
Tutorial:

Let x represent the number.
We have 0.45*x - 0.25*x = 48.
Grouping, we find that (0.45-0.25)*x = 48, which yields 0.2*x = 48, and so x = 48/0.2 = 240
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Correct answer is (C) - 240

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