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CBSE Class 10 Answered

Shush and Komal can do a job together in 7 days. Shush is 7/4 times as efficient as Komal. The same job can be done by Shush alone in
Asked by rushabhjain.a | 31 Jan, 2019, 09:46: AM
answered-by-expert Expert Answer
shush space completes space work space in space straight s space days so space in space one space day space 1 over straight s th space part similarly Komal space can space complete space 1 over straight k th space part space in space straight a space day 1 over straight s plus 1 over straight k equals 1 over 7 shush space is space fraction numerator 7 over denominator 4 space end fraction times space more space efficient 1 over straight s equals space fraction numerator 7 over denominator 4 space end fraction cross times 1 over straight k fraction numerator 4 over denominator 7 space end fraction cross times 1 over straight s equals space 1 over straight k so space 1 st space eqn space becomes 1 over straight s plus fraction numerator 4 over denominator 7 space end fraction cross times 1 over straight s equals 1 over 7 straight S equals 11 space days
Answered by Arun | 31 Jan, 2019, 10:17: AM

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CBSE 10 - Maths
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