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A does 20% less work than B. If A can fi...

A does 20% less work than B. If A can finish a piece of work in `7(1)/(2)`hours, then B can finish it in a.) 5 hours b.) `(11)/2` hours c.) 6 hours d.)`(13)/2` hours

Text Solution

Verified by Experts

work done by B in 1 hour=1/x
Work done by A in 1 hour=4/5x
Work done by A in 1 hour=8/15
According to question
`4/5x=2/15`
`x=6`
Work done by B in 1 hour=1/x=1/6
Complete work done by B in ^ hours
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