Bucket P has thrice the capacity as bucket Q It takes 60 turns for bucket P to fill the empty drum. How many turns it will take for both the buckets P and Q, having each turn together to fill the empty drum?
Let capacity of P be y litres. Then, capacity of Q = y/3 litres. Capacity of the drum = 60y litres.
Required number of turns = 60y /(y + (y/3)) = (60 * (3/4y) = 45
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