A vessel contains a mixture of milk and water in the respective ratio of 5 : 1 : 24 litre of mixture was taken out and replaced with the same quantity of milk so that the resultant ratio between the quantities of milk and water in the mixture was 13:2 respectively. If 15 litre of the mixture is again taken out from the vessel, what is the resultant quantity of milk in the mixture ? (in litre)

A, B and C started a business with investments of INR 4200/-, INR 3600/- and INR 2400/- respectively. After 4 months from the start of the business, A invested INR 1000/-more. After 6 months from the start of the business, B and C invested additional amounts in the respective ratio of 1:2. If at the end of 10 months they received a profit of INR 2820/- and A’s share in the profit was INR 1200/-, what was the additional amount that B invested

Area of a rectangle is 150 m² . When the breadth of the same rectangle is increased by 2 m and the length decreased by 5 m, the area of the rectangle decreases by 30 m². What is the perimeter of the square whose sides are equal to the length of the rectangle

120,137,178,222,290,375,477

18,21,25,35,52,78,115

1,2,6,21,88,505,2676