There are 2 containers, a pail and a rectangular tank.

30% of the pail is filled with water.

The ratio of the volume of water in the pail to that in the tank is 3:10.

The tank measuring 120 cm by 75 cm by 40 cm is filled with water to 12.5% of its total capacity.

(a) What is the volume of the pail?

(b) If each pail was completely filled with water, how many of such pails would be needed to fill an empty tank of the above dimensions?

Notes to students:

1. If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12