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P and Q can complete a task in 50 and 20 days respectively. In how many days can they complete 70% of the task if they work together?1). 20 days2). 30 days3). 40 days4). 10 days |
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Answer» P’s one - day work = 1/50 Q’s one - day work = 1/20 One - day work of both P and Q = 1/50 + 1/20 = 7/100 Total TIME taken to COMPLETE the work = 100/7 days Time taken to complete 70% of work = (70/100) × (100/7) = 10 days |
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