Ratio and Proportion

Q.

What number should be subtracted from each of the number 23, 30, 57 and 78; so that the remainders are in proportion?

1. 6

2. 4

3. 5

4. 8

Q. If the cost of a blue pen is ₹15 and a black pen is ₹20. Find the ratio of cost of blue pen to black pen.

1. 1:2
2. 3:4
3. 2:3
4. 2:5

Q. Find the ratio of 40 seconds to 2 minutes.

1. 1:3
2. 3:7
3. 2:7
4. 1:5

Q.

The method by which two similar quantities are compared by using division is known as comparison by

1. Inverse

2. Proportion

3. Reciprocal

4. Ratio

Q.

John invested ₹ 25000 , Rafay ₹ 20000 and Usman ₹ 10000 to start a business together.

They got ₹ 2200 profit in a month which they divided in the ratio of their investments. How much did Rafay get ?

1. ₹ 600

2. ₹ 200

3. ₹ 800

4. ₹ 1000

Q.

The length of a snake is 10 cm and that of a crocodile is 2 m. Pick the correct statement.

1. The ratio of length of snake to crocodile is 5 : 1

2. The ratio of length of snake to crocodile is 1 : 20

3. Crocodile is 15 times longer than the snake.

4. Crocodile is 10 times longer than the snake.

Q.

The ages of A and B are in the ratio 3: 1. After fifteen years, the ratio will be 2: 1. Their present ages are ____________

1. 45, 90

2. 45, 15

3. 36, 12

4. 33, 11

Q. In an office, there are 40 holidays in a year. Find the ratio of holidays to the total number of days (take 1 year as 360 days).

1. 2:9
2. 1:9
3. 12:9
4. 9:12

Q. Mala and Bala got 75 marks and 25 marks respectively in an examination. Find the ratio of the marks scored by Mala to total marks obtained by both of them.

1. 3:4
2. 1:3
3. 4:3
4. 3:1

Q.

Ratio is a method of comparison of similar quantities by using ________.

1. addition

2. multiplication

3. subtraction

4. division