Rtet Feb 2011 Q#94

0. The numerator of a fraction is less by 2 than its denominator. If we subtract 2 from the numerator and add 2 to the denominator, then the new fraction obtained is 1/3. What is the original fraction?

Answer
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Option : C
Explanation : Let (x-2)/x be the fraction. (x-2-2)/(x+2)(x+2)=1/3 Then, 3x - 12 = x + 2. or x = 7. The fraction is 5/7.

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