Maths / Direct and Inverse Variation / Time and Work

QUESTION

12 men can do a piece of work in 25 days. In how many days can 20 men finish the same work ?

EXPLANATION
Explain TypeExplanation Content
Text

$\\According\;to\; question\\\\ Let \;the\;number\;of \;days\; n\\\\ Using\;inverse\; variation\\\\ 12\times 25=20\times n\\\\ 300=20n\\\\ \Rightarrow n=\frac{300}{20}=15\\\\ n=15\;days$

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