SOLUTION: the ratio of two numberds is 3:4. If the difference is 12 find its smaller number

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Question 723804: the ratio of two numberds is 3:4. If the difference is 12 find its smaller number
Answer by fcabanski(1391) About Me  (Show Source):
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Call the numbers x and y


x/y = 3/4 and y-x = 12 so y=x+12


Substitute that y value (x+12) into the proportion and then solve for x.


x/(x+12) = 3/4 ---> 4x = 3(x+12) = 3x + 36


x=36


y-36 = 12 ---> y = 48


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