Stepwise Solutions for NCERT Class 6 Mathematics Chapter 12 – Ratio and proportion – Exercise 12.1
1. There are 20 girls and 15 boys in a class.
(a) What is the ratio of number of girls to the number of boys?
(b) What is the ratio of number of girls to the total number of students in the class?
2. 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 number of students liking tennis.
(b) Number of students liking cricket to total number of students.
3. See the figure and find the ratio of
(a) Number of triangles to the number of circles inside the rectangle.
(b) Number of squares to all the figures inside the rectangle.
(c) Number of circles to all the figures inside the rectangle.
4. Distances travelled by Hamid and Akhtar in an hour are 9 km and 12 km. Find the ratio of speed of Hamid to the speed of Akhtar.
5. Fill in the following blanks:
[Are these equivalent ratios?]
6. Find the ratio of the following :
(a) 81 to 108 (b) 98 to 63 (c) 33 km to 121 km (d) 30 minutes to 45 minutes
7. Find the ratio of the following:
(a) 30 minutes to 1.5 hours (b) 40 cm to 1.5 m (c) 55 paise to Re 1 (d) 500 ml to 2 litres
8. In a year, Seema earns Rs 1,50,000 and saves Rs 50,000. Find the ratio of
(a) Money that Seema earns to the money she saves.
(b) Money that she saves to the money she spends.
9. There are 102 teachers in a school of 3300 students. Find the ratio of the number of teachers to the number of students.
10. In a college, out of 4320 students, 2300 are girls. Find the ratio of
(a) Number of girls to the total number of students.
(b) Number of boys to the number of girls.
(c) Number of boys to the total number of students.
11. Out of 1800 students in a school, 750 opted basketball, 800 opted cricket and remaining opted table tennis. If a student can opt only one game, find the ratio of
(a) Number of students who opted basketball to the number of students who opted table tennis.
(b) Number of students who opted cricket to the number of students opting basketball.
(c) Number of students who opted basketball to the total number of students.
12. Cost of a dozen pens is Rs 180 and cost of 8 ball pens is Rs 56. Find the ratio of the cost of a pen to the cost of a ball pen.
13. Consider the statement: Ratio of breadth and length of a hall is 2 : 5. Complete the following table that shows some possible breadths and lengths of the hall.
14. Divide 20 pens between Sheela and Sangeeta in the ratio of 3 : 2.
15. Mother wants to divide Rs 36 between her daughters Shreya and Bhoomika in the ratio of their ages. If age of Shreya is 15 years and age of Bhoomika is 12 years, find how much Shreya and Bhoomika will get.
16. Present age of father is 42 years and that of his son is 14 years. Find the ratio of
(a) Present age of father to the present age of son.
(b) Age of the father to the age of son, when son was 12 years old.
(c) Age of father after 10 years to the age of son after 10 years.
(d) Age of father to the age of son when father was 30 years old.
You can find the solutions for Class 6 Mathematics previous exercises from here
- Algebra – Exercise 11.5
- Chapter 11 – Algebra – Exercise 11.4
- Algebra – Exercise 11.3
- Chapter 11 – Algebra – Exercise 11.2
- Algebra – Exercise 11.1
- Chapter 10 – Mensuration – Exercise 10.3
- Mensuration – Exercise 10.2
- Chapter 10 – Mensuration – Exercise 10.1
- Data Handling – Exercise 9.4
- Chapter 9 – Data Handling – Exercise 9.3
- Data Handling – Exercise 9.2
- Chapter 9 – Data Handling – Exercise 9.1
- Chapter 8 – Decimals – Exercise – 8.6
- Decimals – Exercise – 8.5
- Chapter 8 – Decimals – Exercise – 8.4
- Decimals – Exercise – 8.3
- Chapter 8 – Decimals – Exercise – 8.2
- Decimals – Exercise – 8.1
- Fractions – Exercise – 7.6
- Chapter 7 – Fractions – Exercise – 7.5
- Fractions – Exercise – 7.4
- Chapter 7 – Fractions – Exercise – 7.3
- Fractions – Exercise – 7.2
- Chapter 7 – Fractions – Exercise – 7.1
- Integers – Exercise – 6.3
- Chapter 6 – Integers – Exercise 6.2
- Integers – Exercise 6.1
- Understanding Elementary Shapes – Exercise 5.9
- Chapter 5 – Understanding Elementary Shapes – Exercise 5.8
- Understanding Elementary Shapes – Exercise 5.7
- Chapter 5 – Understanding Elementary Shapes – Exercise 5.6
- Understanding Elementary Shapes – Exercise 5.5
- Chapter 5 – Understanding Elementary Shapes – Exercise 5.4
- Understanding Elementary Shapes – Exercise 5.3
- Chapter 5 – Understanding Elementary Shapes – Exercise 5.2
- Understanding Elementary Shapes – Exercise 5.1
- Chapter Basic Geometrical Ideas – Exercise 4.6 Solutions
- Basic Geometrical Ideas – Exercise 4.5 Solutions
- Chapter 4 Basic Geometrical Ideas – Exercise 4.4 Solutions
- Basic Geometrical Ideas – Exercise 4.3 Solutions
- Chapter 4 Basic Geometrical Ideas – Exercise 4.2 Solutions
- Basic Geometrical Ideas – Exercise 4.1 Solutions
- Playing with Numbers – Exercise 3.7 Solutions
- Chapter 3 Playing with Numbers – Exercise 3.6 Solutions
- Playing with Numbers – Exercise 3.5 Solutions
- Chapter 3 Playing with Numbers – Exercise 3.4 Solutions
- Playing with Numbers – Exercise 3.3 Solutions
- Chapter 3 Playing with Numbers – Exercise 3.2 Solutions
- Playing with Numbers – Exercise 3.1 Solutions
- Whole Numbers – Exercise 2.3 Solutions
- Chapter 2 Whole Numbers – Exercise 2.2 Solutions
- Whole Numbers – Exercise 2.1 Solutions
- Knowing Our Numbers Solutions Exercise 1.3 Solutions
- Chapter 1 Knowing Our Numbers Solutions Exercise 1.2 Solutions
- Knowing Our Numbers Solutions Exercise 1.1 Solutions
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