If 10 litres of water is added to a tub that is already filled with 40 litres of diluted milk, then the concentration of milk in the tub will be 70%. What was the concentration of milk in the tub before water was added to the tub?
Explanation:
Total quantity of solution = 40 + 10 = 50 litres
Quantity of milk in 50 litres solution = 70/100 × 50 = 35 liters
Concentration of milk in the tub before water was added to the tub = 35/40 × 100 = 87.5%
Hence, option (a).
» Your doubt will be displayed only after approval.
Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.