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1). 122). 103). 94). 11 |
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Answer» Time taken by P = 15 days Time taken by Q = 24 days Let Total work = LCM of 15 and 24 = 120 units Efficiency of P = 120/15 = 8 units/day Efficiency of Q = 120/24 = 5 units/day Total Efficiency of P and Q = 8 + 5 = 13 units/day Total work DONE by Q in 2 days = 5 × 2 = 10 units Now New Total work = 120 + 10 = 130 units ∴ Total time taken to complete the work = 130/13 = 10 days |
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