arithmetic - 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 - skillgun

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