Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 571 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.A town has 45900 people. The population grows by 12% every year. What will the population be after 1 year?
2. 2.A scooter is worth ₹26400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
3. 3.Find the compound interest on ₹49000 at 10% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
5. 5.What amount will ₹60000 grow to in 2 years at 15% per year compound interest (in ₹)?
6. 6.What amount will ₹42800 grow to in 1 year at 8% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹24700 at 20% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 20000 people. The population grows by 10% every year. What will the population be after 3 years?
10. 10.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.A town has 48200 people. The population grows by 20% every year. What will the population be after 1 year?
12. 12.A town has 47600 people. The population grows by 5% every year. What will the population be after 2 years?
13. 13.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
14. 14.What amount will ₹49300 grow to in 1 year at 12% per year compound interest (in ₹)?
15. 15.What amount will ₹27500 grow to in 2 years at 8% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹34800 at 20% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹60000 at 12% per year for 1 year, compounded every year (in ₹).
18. 18.A scooter is worth ₹31000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
19. 19.A town has 19500 people. The population grows by 4% every year. What will the population be after 1 year?
20. 20.What is the difference between the compound interest and the simple interest on ₹58400 at 20% per year for 2 years (in ₹)?
21. 21.A town has 31200 people. The population grows by 25% every year. What will the population be after 1 year?
22. 22.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
23. 23.A town has 34000 people. The population grows by 20% every year. What will the population be after 2 years?
24. 24.A town has 34000 people. The population grows by 5% every year. What will the population be after 2 years?
25. 25.Find the compound interest on ₹3200 at 25% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹12200 grow to in 1 year at 15% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹57400 at 12% per year for 1 year, compounded every year (in ₹).
28. 28.What amount will ₹2500 grow to in 1 year at 4% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹44400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
31. 31.What amount will ₹27600 grow to in 2 years at 25% per year compound interest (in ₹)?
32. 32.What amount will ₹46400 grow to in 3 years at 25% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹7200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
34. 34.What amount will ₹54800 grow to in 2 years at 5% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹22200 at 20% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹47000 at 10% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹45600 at 15% per year for 2 years (in ₹)?
38. 38.What amount will ₹18800 grow to in 2 years at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹2900 at 20% per year for 2 years (in ₹)?

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