A trader mixes wheat costing ₹40/kg and ₹60/kg in ratio 3:2 and sells half at 25% profit, one-fourth at 10% loss and one-fourth at no profit. Overall profit percentage?

A shopkeeper mixes 60 kg of sugar worth Rs. 30 per kg with 90 kg of sugar worth Rs. 40 per kg. At what rate he must sell the mixture to gain 20%?

A milkman mixes 30 liters of water with 70 liters of milk. After selling one fourth of this mixture, he adds water to replenish the quantity that he has sold. What is the current proportion of water…

An alloy contains zinc, copper and lead in ratio 3:5:4. Copper weighs 20 kg. Total alloy and zinc mass?

A 20 liter mixture contains 30% alcohol and 70% water. If 5 liters of water is added to the mixture, what will be the percentage of alcohol in the new mixture?

A bottle contains spirit and water in the ratio 1 : 4 and another identical bottle contains spirit and water in the ratio 4 : 1. In what ratio should the mixtures in the two bottles be mixed to get a…