Question

If the numerator and denominator of 13/17 are respectively increased and decreased by the same number , the resulting fraction is 1/2. Find the number.

3
-3
1/3

Answer 1

Let the number be x.

Now,

according to question...

(13+x) / (17-x) = 1/2

[ by cross multiplication]

2(13+x) = 1(17-x).

26+2x = 17-x

3x = -9

x = -3

Hence, the number will be -3..

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