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प्रश्न
A and B working together can do a piece of work in 10 days B alone can do the same work in 15 days. How long will A alone take to do the same work?
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उत्तर
A and B working together can do a piece of work in 10 days
and B alone can do the same work in 15 days
A and B's one day's work = `1/10`
and B's one day's work = `1/15`
∴ A's one day's work = `1/10 - 1/15`
`= (3 - 2)/30 = 1/30`
Hence A can do the same work in = 30 days
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संबंधित प्रश्न
A is able to complete `1/3` of a certain work in 10 hrs and B is able to complete `2/5` of the same work in 12 hrs. Find:
(i) how much work can A do in 1 hour ?
(ii) how much work can B do in 1 hour ?
(iii) in how much time will the work be completed, if both work together.
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