A container contains 60 litres of milk. From this, 6 litres of milk was taken out and replaced by water. This process was repeated once more. How much milk is left?
If the length of a rectangle is increased in the ratio 4:5 and the breadth is decreased in the ratio 3:2, find the ratio in which the area of the rectangle will change.
A mixture contains milk and water in the ratio 4:3. If 5 liters of water is added to the mixture, the ratio becomes 4:5. How many liters of milk are there in the mixture?
Two numbers are such that the ratio between them is 3:5. If each is increased by 10, the ratio between the new numbers is 5:7. What is the sum of the original numbers?
Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?