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CBSE Class 7 Answered

The numeratorof a fraction is 8 less than the denominator.if 3 is added to the numerator the fraction is equal to 4/5 what is the original fraction

 

Asked by Reemasambargikar | 11 Aug, 2019, 08:11: PM
Expert Answer
Let x be the denominator
Therefore, x-8 is the numerator
fraction numerator x minus 8 over denominator x end fraction
N o w comma space fraction numerator begin display style x minus 8 plus 3 end style over denominator begin display style x end style end fraction equals 4 over 5
5 x minus 25 equals 4 x rightwards double arrow x equals 25
O r i g i n a l space f r a c t i o n equals fraction numerator begin display style 25 minus 8 end style over denominator begin display style 25 end style end fraction equals 17 over 25
Answered by Renu Varma | 12 Aug, 2019, 10:35: AM
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