# Selina solutions for Class 6 Mathematics chapter 11 - Ratio [Latest edition]

## Chapter 11: Ratio

Exercise 11 (A)Exercise 11 (B)Exercise 11 (C)Exercise 11 (D)
Exercise 11 (A)

### Selina solutions for Class 6 Mathematics Chapter 11 Ratio Exercise 11 (A)

Exercise 11 (A) | Q 1.1

Express the following ratios in its simplest form :
4:6

Exercise 11 (A) | Q 1.1

Express the following ratios in its simplest form :
48: 54

Exercise 11 (A) | Q 1.1

Express the following ratios in its simplest form :
200:250

Exercise 11 (A) | Q 1.2

Express the following ratios in its simplest form :
5 kg: 800 gm

Exercise 11 (A) | Q 1.2

Express the following ratios in its simplest form :
30 cm : 2 m

Exercise 11 (A) | Q 1.2

Express the following ratios in its simplest form :
3 m : 90 cm

Exercise 11 (A) | Q 1.2

Express the following ratios in its simplest form :
2 years: 9 months

Exercise 11 (A) | Q 1.2

Express the following ratios in its simplest form :
1 hour: 45 minutes

Exercise 11 (A) | Q 1.2

Express the following ratios in its simplest form :
4 min : 45 sec

Exercise 11 (A) | Q 1.3

Express the following ratios in its simplest form :
1 1/2:2 1/2

Exercise 11 (A) | Q 1.3

Express the following ratios in its simplest form :
3 1/2 : 7

Exercise 11 (A) | Q 1.3

Express the following ratios in its simplest form :
2 1/3 : 3 1/2: 1 1/4

Exercise 11 (A) | Q 1.3

Express the following ratios in its simplest form :
x: 4x

Exercise 11 (A) | Q 1.3

Express the following ratios in its simplest form :
2.5 : 1.5

Exercise 11 (A) | Q 1.3

Express the following ratios in its simplest form :
2.5 : 5

Exercise 11 (A) | Q 2

A field is 80 m long and 60 m wide. Find the ratio of its width to its length.

Exercise 11 (A) | Q 3.1

State true or false :
A ratio equivalent to 7 : 9 is 27 : 21.

Exercise 11 (A) | Q 3.2

State true or false :
A ratio equivalent to 5 : 4 is 240 : 192

Exercise 11 (A) | Q 3.3

State true or false :
A ratio of 250 gm and 3 kg is 1 : 12.

Exercise 11 (A) | Q 4

Is the ratio of 15 kg and 35 kg same as the ratio of 6 years and 14 years?

Exercise 11 (A) | Q 5

Is the ratio of 6 g and 15 g same as the ratio of 36 cm and 90 cm ?

Exercise 11 (A) | Q 6

Find the ratio between 3.5 m, 475 cm and 2.8 m

Exercise 11 (A) | Q 7

Find the ratio between 5 dozen and 2 scores. [1 score = 20]

Exercise 11 (B)

### Selina solutions for Class 6 Mathematics Chapter 11 Ratio Exercise 11 (B)

Exercise 11 (B) | Q 1

The monthly salary of a person is Rs. 12,000 and his monthly expenditure is Rs 8,500. Find the ratio of his:
(i) salary to expenditure
(ii) expenditure to savings
(ii) savings to salary

Exercise 11 (B) | Q 2

The strength of a class is 65, including 30 girls. Find the ratio of the number of:
(i) girls to boys
(ii) boys to the whole class
(iii) the whole class to girls

Exercise 11 (B) | Q 3

The weekly expenses of a boy have increased from ₹ 1,500 to ₹ 2,250. Find the ratio of:
(i) increase in expenses to original expenses.
(ii) original expenses to increased expenses.
(iii) increased expenses to increase in expenses.

Exercise 11 (B) | Q 4.1

Reduce the following ratio to their lowest term:
1 hour 20 min : 2 hours

Exercise 11 (B) | Q 4.2

Reduce the following ratio to their lowest term:

4 weeks : 49 days

Exercise 11 (B) | Q 4.3

Reduce the following ratio to their lowest term:

3 years 4 months : 5 years 5 months.

Exercise 11 (B) | Q 4.4

Reduce the following ratio to their lowest term:

2 m 40 cm : 1 m 44 cm

Exercise 11 (B) | Q 4.5

Reduce the following ratio to their lowest term:

5 kg 500 gm : 2 kg 750 gm

Exercise 11 (B) | Q 5

Two numbers are in the ratio 9 : 2. If the smaller number is 320, find the larger number.

Exercise 11 (B) | Q 6

A bus travels 180 km in 3 hours and a train travels 450 km in 5 hours. Find the ratio of speed of train to the speed of bus.

Exercise 11 (B) | Q 7

In winter, a school opens at 10 a.m. and closes at 3.30 p.m. If the lunch interval is of 30 minutes, find the ratio of lunch interval to total lime of the class periods.

Exercise 11 (B) | Q 8

Rohit goes to school by car at 60 km per hour and Manoj goes to school by scooty at 40 km per hour. If they both live in the same locality, find the ratio between the time taken by Rohit and Manoj to reach school.

Exercise 11 (B) | Q 9

In a club has 360 members, 40 play carrom, 96 play table tennis, 144 play badminton, and remaining members play volley-ball. If no member plays two or more games, find the ratio of members who play:
(i) carrom to the number of those who play badminton.
(ii) badminton to the number of those who play table-tennis.
(iii) table-tennis to the number of those who play volley-ball.
(iv) volleyball to the number of those who play other games.

Exercise 11 (B) | Q 10

The length of a pencil is 18 cm and its radius is 4 cm. Find the ratio of its length to its diameter.

Exercise 11 (B) | Q 11

Ratio of the distance of the school from A’s home to the distance of the school from B’s home is 2 : 1.
(i) Who lives nearer to the school?
(ii) Complete the following table:

Exercise 11 (B) | Q 12

The student-teacher ratio in a school is 45 : 2. If there are 4050 students in the school, how many teachers must be there?

Exercise 11 (C)

### Selina solutions for Class 6 Mathematics Chapter 11 Ratio Exercise 11 (C)

Exercise 11 (C) | Q 1

₹120 is to be divided between Hari and Gopi in the ratio 5 : 3. How much does each get?

Exercise 11 (C) | Q 2

Divide 72 in the ratio 2 1/2:1 1/2

Exercise 11 (C) | Q 3

Divide 81 into three parts in the ratio 2 : 3 : 4.

Exercise 11 (C) | Q 4

Divide Rs 10,400 among A, B and C in the ratio 1/2:1/3:1/4

Exercise 11 (C) | Q 5

A profit of Rs 2,500 is to be shared among three persons in the ratio 6 : 9 : 10. How much does each person get?

Exercise 11 (C) | Q 6

The angles of a triangle are in the ratio 3 : 7 : 8. Find the greatest and the smallest angles.

Exercise 11 (C) | Q 7

The sides of a triangle are in the ratio 3 : 2 : 4. If the perimeter of the triangle is 27 cm, find the length of each side.

Exercise 11 (C) | Q 8

An alloy of zinc and copper weighs 12 1/2kg. if in the alloy, the ratio of zinc and copper is 1 : 4, find the weight of copper in it.

Exercise 11 (C) | Q 9

How will Rs 31500 be shared between A, B, and C; if A gets the double of what B gets, and B gets the double of what C gets?

Exercise 11 (C) | Q 10

Mr. Gupta divides Rs 81000 among his three children Ashok, Mohit, and Geeta in such a way that Ashok gets four times what Mohit gets and Mohit gets 2.5 times what Geeta gets. Find the share of each of them.

Exercise 11 (D)

### Selina solutions for Class 6 Mathematics Chapter 11 Ratio Exercise 11 (D)

Exercise 11 (D) | Q 1.1

Which ratio is greater:

8/15 or 5/9

Exercise 11 (D) | Q 1.2

Which ratio is greater:

3/7 or 6/13

Exercise 11 (D) | Q 2.1

Which ratio is smaller:

9/17 or 8/15

Exercise 11 (D) | Q 2.2

Which ratio is smaller:

7/15 or 15/32

Exercise 11 (D) | Q 3

Increase 95 in the ratio 5 : 8.

Exercise 11 (D) | Q 4

Decrease 275 in the ratio 11 : 7.

Exercise 11 (D) | Q 5

Decrease 850 in the ratio 17 : 6 and then increase the result in ratio 5 : 9.

Exercise 11 (D) | Q 6

Decrease 850 in the ratio 17 : 6 and then decrease the resulting number again in 4 : 3.

Exercise 11 (D) | Q 7

Increase 1200 in the ratio 2 : 3 and then decrease the resulting number in the ratio 10 : 3.

Exercise 11 (D) | Q 8

Increase 1200 in the ratio 3 : 7 and then increase the resulting number again in the ratio 4 : 7.

Exercise 11 (D) | Q 9

The number 650 is decreased to 500 in the ratio a : b, find the ratio a : b.

Exercise 11 (D) | Q 10

The number 800 is increased to 960 in the ratio a : b, find the ratio a : b.

## Chapter 11: Ratio

Exercise 11 (A)Exercise 11 (B)Exercise 11 (C)Exercise 11 (D)

## Selina solutions for Class 6 Mathematics chapter 11 - Ratio

Selina solutions for Class 6 Mathematics chapter 11 (Ratio) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Class 6 Mathematics solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Class 6 Mathematics chapter 11 Ratio are Difference Between Fraction and Ratio., Concept of Ratio.

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