Milk costs Rs. 50 per litre. How much water must be added to 40 litres of milk so that the mixture can be sold at Rs. 40 per litre without any loss?
Correct answer B. 10 litres
Explanation
Cost of 40 litres milk = Rs. 2000. At Rs. 40 per litre this must fill 2000/40 = 50 litres, so 10 litres of water is added.
Answer checked How we write and check questions
Discussion