The ratio of the number of boys and girls in a college is 7:8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
A sum of money is divided among A, B, C and D in the ratio 3:4:9:10. If the share of C is ₹2580 more than the share of B, then what is the total amount of A and D together?
The ratio of land and water on Earth is 1:2. In the Northern Hemisphere, this ratio is 2:3. What is the ratio of land and water in the Southern Hemisphere?
Gold is 19 times as heavy as water and copper is 9 times as heavy as water. In what ratio should these be mixed to get an alloy 15 times as heavy as water?
A container contains 40 litres of milk. From this container, 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?
The ratio of the number of sides of two regular polygons is 1:2 and the ratio of their interior angles is 2:3. The number of sides of these polygons are:
The ratio of incomes of A and B is 5:4 and the ratio of their expenditures is 3:2. If at the end of the year, each saves ₹1600, then the income of A is: