Homework Help: Mathematics

Posted by JP on Saturday, October 22, 2011 at 1:01am.

The numerator of a fraction is two less than its denominator. When both numerator and denominator are increased by 3, the fraction is increased by 3/20. Find the original fraction. Explain your solution

Mathematics - drwls, Saturday, October 22, 2011 at 1:56am
Let the original fraction be x/(x+2)

(x+3)/(x+5) = x/(x+2) + 0.15

Solve for x. Try x = 3,

6/8 = 3/5 + 0.15 It works!

So the original fraction is 3/5.

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