P works twice as fast as Q. If Q can complete a task in 36 days independently, the number of days in which P and Q can together complete the task in:
Given, Efficiencies of P and Q are in the ratio 2 :Â 1.
Q can do the work independently in 36 days.
Let the total work be 36 units.
Efficiency of Q = 1 unit per day
Efficiency of P = 2 units per day.
Efficiency of P and Q together = 3 units per day
Therefore, 36 units of work will be completed in 36/3 = 12 days.
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