List of top Quantitative Ability and Data Interpretation Questions on Mixture Problems asked in MICAT

There is a tank with some capacity, 9 liters are taken out and replaced with water 2 times. Now milk:water = 16:9, find the capacity of the tank.

A metal weighs 1500 kg per cubic metre and another metal weighs 2500 kg per cubic metre. These two metals are mixed to form an alloy.