In a box, the ratio of red marbles to blue marbles is 7 : 4. Which of the following could be the total number of marbles in the box?

If 7 : 30 :: x :15, then the value of x is

Avinash works as a lecturer and earns Rs.12000 per month. His wife who is a doctor earns Rs.15000per month. Find the ratio of Avinash's income to their total income.

In a school library, the ratio of Mathematics books to Science books is same as the ratio of Science books to Hindi books. If there are 450 books of Science and 300 books of Hindi, then find the number of books in Mathematics

The cost of 4 pens is Rs. 40. The cost of 11 pens is ____________

To find the ratio of two quantities, they must be expressed in ______________ unit.

Ratio of 5 paise to 25 paise is the same as the ratio of 20 paise to ______________

21 : 6 : : 35:10

12: 18:: 28: 12

8 : 9: :24:27

Find the ratio of 80 cm to 1.2 m.

Determine, if the following are in proportion.
32,48,70,210

Given two equivalent ratios of 3: 8.

Find the ratio of 40 cm to 3 m.

Can you think of some more examples where you have to divide a number of things in some ratio? Frame three such examples and ask your friends to solve them.
The semi-perimeter of a room is 50 m. The ratio of the dimensions of the room is 3:2. Find the length and breadth of the room.

In a school, there were 73 holidays in one year. What is the ratio of the number of holidays to the number of days in one year?

If the ratio between 72 and y is same as the ratio between 64 and x, then what is the ratio between x and y?

Anish made 42 runs in 6 overs and Anup made 63 runs in 7 overs. Who made more runs per over?

The sides of a triangle are in the ratio 2 : 3 : 5. If the total perimeter of the triangle is 70 cm, then find the length of the longest side.

Consider this situation. Raju went to the market to purchase tomatoes. One shopkeeper tells him that the cost of tomatoes is Rs. 40 for 5 kg. Another shopkeeper gives the cost as 6 kg for Rs. 42. Now, what should Raju do? Should he purchase tomatoes from the first shopkeeper or from the second? Will the comparison by taking the difference help him decide? No, why not? Think of some way to help him. Discuss with your friends.

Out of 30 students in a class, 6 like football, 12 like cricket and remaining like tennis. Find the ratio of
(a) number of students liking football to the number of students liking tennis.
(b) number of students liking cricket to total number of students.

A cloth is cut into three pieces in the ratio 3 : 5 : 9. If the smallest piece is 45 m long, then what is value of the total piece of cloth?

In a year, Ravi earns Rs.360000 and paid Rs.24000 as income tax. Find the ratio of his
(a) income to paid income tax.
(b) paid income tax to income after paying income tax.