For the following questions answer them individually
A, B, C started a shop by investing Rs.27,000, Rs.81,000 and Rs.72,000 respectively. At the end of one yi ar, B's share of total profit was Rs.36,000. What was the total profit ?
A mixture of 40 litres of milk and water contains 10% of water. How much water should be added to this mixture so that the new mixture contains 20% water ?