When 20% of a number is added to another number the number increase by 50% What is the ratio between the first and the second number?

Let the two numbers be A and B. So

 B + 20100A= (1 + 50100)BB + 15A = 150100BB + 15A = 32B15A = 32B - B15A = 12BAB = 52

So the ratio is 5:2.

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