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ICSE Class 8 Answered

The sum of three rational numbers a/b, c/d and e/f is 13/60 . If the sum of a/b and c/d is 2/15, find e/f .
Asked by kshilpi | 12 Apr, 2020, 02:01: PM
answered-by-expert Expert Answer
begin mathsize 16px style straight a over straight b plus straight c over straight d plus straight e over straight f equals 13 over 60 rightwards double arrow 2 over 15 plus straight e over straight f equals 13 over 60 space space space space space space space.... space open parentheses straight a over straight b plus straight c over straight d equals 2 over 15 close parentheses rightwards double arrow straight e over straight f equals 13 over 60 space minus space fraction numerator 2 cross times 4 over denominator 15 cross times 4 end fraction equals fraction numerator 13 minus 8 over denominator 60 end fraction equals 5 over 60 equals 1 over 12 space end style
Answered by Yasmeen Khan | 12 Apr, 2020, 03:42: PM

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