For getting maximum profit, Rahul will use 30% discount in which item and he will pay how much rupees to the shopkeeper?

Question

Rate list of some liquids purchased by Rahul is -
Item.........Rate per litre.......Amount required in litres
Milk......20/-........5
Oil........80/-........1
Cream......120/-.......0.5
A shopping mall offers a discount of 10%,20% and 30% in the rate of following items. These discounts are given according to the demand of customer.
For getting maximum profit , Rahul will use 30% discount in which item and he will pay how much rupees to the shopkeeper ?

Answer 1

he will take 30% discount on milk
As the quantity of milk required is more.
Milk cost Rs (20*5) = 100
Oil cost Rs (80*1) = 80
Cream cost Rs (120*0.5) = 60
So he will take discount 30% on milk, 20% on oil and 10% on cream
So he will pay = 70 + 64+ 54 = 188