NCERT books are recommended text book for CBSE school curriculum. Most of the govt aided and private schools in India follow NCERT text books as the syllabus books for school subjects. They are written by eminent academicians and scholars from leading universities and academic institutions in India, and help in building a strong base, as well help understand each concept by relevant examples and exercises. They are termed best in term of concept building, for their usage of real life practical examples, and good end of the chapter exercises.

In this article, we have shared solved NCERT exercises for Class 7 maths comparing quantities chapter. Comparing quantities is an important chapter, as it set a base for the arithmetic for the future classes. These NCERT solutions will help students in solving their doubts and clarifying confusion regarding confusions regarding this chapter. Students can refer to NCERT solutions for comparing quantities chapter for their conceptual understanding, as well as matching their own answers with the right solutions of the exercises.

## Class 7 math ncert solution comparing quantities chapter

**Exercise 8.1 solutions**

Q1 – Find the ratio of: (a) Rs 5 to 50 paise (b) 15 kg to 210 g (c) 9 m to 27 cm (d) 30 days to 36 hours View solution

Q2 – In a computer lab, there are 3 computers for every 6 students. How many computers will be needed for 24 students? View solution

Q3 – Population of Rajasthan = 570 lakhs and population of UP = 1660 lakhs. Area of Rajasthan = 3 lakh km2 and area of UP = 2 lakh km2 . (i) How many people are there per km2 in both these States? (ii) Which State is less populated? View solution

**Exercise 8.2 solutions**

Q1 – Convert the given fractional numbers to per cents View solution

Q2 – Convert the given decimal fractions to per cents. (a) 0.65 (b) 2.1 (c) 0.02 (d) 12.35 View solution

Q3 – Estimate what part of the figures is coloured and hence find the per cent which is coloured View solution

Q4 – Find: (a) 15% of 250 (b) 1% of 1 hour (c) 20% of Rs 2500 (d) 75% of 1 kg View solution

Q5. Find the whole quantity if (a) 5% of it is 600. (b) 12% of it is Rs 1080. (c) 40% of it is 500 km. (d) 70% of it is 14 minutes. (e) 8% of it is 40 litres. View solution

Q6. Convert given per cents to decimal fractions and also to fractions in simplest forms: (a) 25% (b) 150% (c) 20% (d) 5% View solution

Q7 – In a city, 30% are females, 40% are males and remaining are children. What per cent are children? View solution

Q8 – Out of 15,000 voters in a constituency, 60% voted. Find the percentage of voters who did not vote. Can you now find how many actually did not vote? View solution

Q9 -Meeta saves ` 4000 from her salary. If this is 10% of her salary. What is her salary? View solution

Q10 – A local cricket team played 20 matches in one season. It won 25% of them. How many matches did they win? View solution

**Exercise 8.3 solutions**

Q1 – Tell what is the profit or loss in the following transactions. Also find profit per cent or loss per cent in each case. (a) Gardening shears bought for Rs 250 and sold for Rs 325. (b) A refrigerater bought for ` 12,000 and sold at Rs 13,500. (c) A cupboard bought for Rs 2,500 and sold at Rs 3,000. (d) A skirt bought for Rs 250 and sold at Rs 150. View solution

Q2 – Convert each part of the ratio to percentage: (a) 3 : 1 (b) 2 : 3 : 5 (c) 1:4 (d) 1 : 2 : 5 View solution

Q3 – The population of a city decreased from 25,000 to 24,500. Find the percentage decrease. View solution

Q4 – Arun bought a car for Rs 3,50,000. The next year, the price went upto Rs 3,70,000. What was the Percentage of price increase? View solution

Q5 – I buy a T.V. for Rs 10,000 and sell it at a profit of 20%. How much money do I get for it? View solution

Q6 – Juhi sells a washing machine for Rs 13,500. She loses 20% in the bargain. What was the price at which she bought it? View solution

Q7 – (i) Chalk contains calcium, carbon and oxygen in the ratio 10:3:12. Find the percentage of carbon in chalk. (ii) If in a stick of chalk, carbon is 3g, what is the weight of the chalk stick? View solution

Q8 – Amina buys a book for Rs 275 and sells it at a loss of 15%. How much does she sell it for? View solution

Q9. Find the amount to be paid at the end of 3 years in each case: (a) Principal = Rs 1,200 at 12% p.a. (b) Principal = Rs 7,500 at 5% p.a. View solution

Q10. What rate gives Rs 280 as interest on a sum of ` 56,000 in 2 years? View solution

Q11. If Meena gives an interest of Rs 45 for one year at 9% rate p.a.. What is the sum she has borrowed? View solution

## End Note

In the article, we have shared solutions for ncert exercises for class 7 maths for comparing quantities chapter. Students can click to respective chapters and refer to the right solution. We advise students to refer to them as clearing their concepts, and matching their solutions. Student should not use them to copy solutions for their homework and instead should try to solve homework on own, as it will impact their learning process.

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