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1). 10 days2). 13 days3). 17 days4). 30 days |
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Answer» Let Jake can FINISH the piece of WORK alone in x days. ∴ ASHLEY can alone finish the work in x/2 days. In 1 DAY Jake can do work = 1/x In 1 day Ashley can do work = 1/(x/2) = 2/x 1/x + 2/x = 1/20 ⇒ 3/x = 1/20 ⇒ x = 60 ∴ Ashley alone can finish the work in 60/2 i.e. 30 days |
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