CBSE Grade 8 Comparing Quantities turns percentages into everyday maths: 20% of 450 is 90, selling a ₹500 item for ₹600 is a 20% profit, simple interest on ₹2,000 at 5% for 3 years is ₹300, and a 15% discount on ₹800 leaves ₹680. Twenty questions cover ratio as percentage, discount and VAT, with the answer key on this page.
Key Takeaways
20% of 450 is 90 (Q1).
A shopkeeper buying for ₹500 and selling for ₹600 makes a 20% profit (Q2).
Simple interest on ₹2,000 at 5% per annum for 3 years is ₹300 (Q3).
If 12% of a number is 60, the number is 500 (Q4).
A 15% discount on a marked price of ₹800 gives a selling price of ₹680 (Q5).
Section A: Multiple Choice Questions (1 Mark Each)
Choose the correct option for each question.
1.What is 20% of 450?
(a) 80(b) 90(c) 100(d) 120
2.A shopkeeper bought an item for ₹500 and sold it for ₹600. The profit percent is:
(a) 10%(b) 15%(c) 20%(d) 25%
3.The simple interest on ₹2,000 at 5% per annum for 3 years is:
(a) ₹200(b) ₹250(c) ₹300(d) ₹350
4.If 12% of a number is 60, the number is:
(a) 400(b) 500(c) 600(d) 720
5.A discount of 15% on a marked price of ₹800 gives a selling price of:
(a) ₹680(b) ₹700(c) ₹720(d) ₹750
6.The ratio 3:5 expressed as a percentage is:
(a) 30%(b) 40%(c) 50%(d) 60%
Section B: Short Answer Type Questions (2 Marks Each)
Show all steps clearly.
7.Find the selling price when marked price is ₹1,200 and discount is 12%.
8.A sum of ₹15,000 is invested at 8% per annum simple interest. Find the amount after 4 years.
9.Convert 7/16 into a percentage.
10.If 35% of people prefer tea, 40% prefer coffee, and the rest prefer juice, what percentage prefers juice?
11.Find CI on ₹10,000 at 10% per annum for 2 years compounded annually.
12.The population of a town increases by 8% annually. If the present population is 54,000, find it a year ago.
13.A dealer buys an article for ₹2,400 and sells it at a profit of 15%. Find the selling price.
14.Find the amount if ₹8,000 is invested at 6% p.a. compounded half-yearly for 1 year.
Section C: Word Problems (3 Marks Each)
Apply the concepts to solve real-life problems.
15.A man bought a car for ₹4,50,000 and spent ₹50,000 on repairs. He sold it for ₹6,00,000. Find his profit percentage.
16.The value of a machine depreciates by 10% every year. If its present value is ₹1,00,000, what will it be after 2 years?
17.A shopkeeper gives a 10% discount on all items and still makes a 12% profit. Find the cost price of an item marked at ₹1,400.
18.Find the compound interest on ₹20,000 for 3 years at 5% per annum compounded annually.
19.In a school, 40% of students are girls. If the number of boys is 480, find the total number of students.
20.VAT is charged at 12% on a laptop marked at ₹45,000. Find the total amount to be paid.
Answer Key
1. b) 90
2. c) 20%
3. c) ₹300
4. b) 500
5. a) ₹680
6. d) 60%
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End of Worksheet
People Also Ask
What is 20% of 450?
90. It is option (b) in this worksheet (Q1).
What is the simple interest on ₹2,000 at 5% for 3 years?
₹300. It is option (c) in this worksheet (Q3).
Express the ratio 3:5 as a percentage.
60%. It is option (d) in this worksheet (Q6).
After a 15% discount on ₹800, what is the selling price?
₹680. It is option (a) in this worksheet (Q5).
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