Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 370 · 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.What is the difference between the compound interest and the simple interest on ₹9200 at 25% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹45400 at 10% per year for 2 years, compounded every year (in ₹).
3. 3.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹8900 at 10% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹52900 at 20% per year for 2 years, compounded every year (in ₹).
6. 6.What amount will ₹15600 grow to in 2 years at 15% per year compound interest (in ₹)?
7. 7.A town has 35500 people. The population grows by 20% every year. What will the population be after 3 years?
8. 8.Find the compound interest on ₹41500 at 20% per year for 3 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹43200 at 25% per year for 2 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹18400 at 5% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹60000 at 25% per year for 2 years (in ₹)?
12. 12.What amount will ₹3100 grow to in 1 year at 4% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹36500 at 10% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹47500 grow to in 2 years at 4% per year compound interest (in ₹)?
15. 15.A town has 19200 people. The population grows by 10% every year. What will the population be after 2 years?
16. 16.What is the difference between the compound interest and the simple interest on ₹28500 at 20% per year for 2 years (in ₹)?
17. 17.A town has 34600 people. The population grows by 25% every year. What will the population be after 1 year?
18. 18.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹50700 at 25% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹12800 at 25% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹34000 at 5% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹12700. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
24. 24.A town has 57700 people. The population grows by 5% every year. What will the population be after 1 year?
25. 25.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
27. 27.What amount will ₹40500 grow to in 1 year at 8% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹4800 at 10% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
30. 30.What amount will ₹49100 grow to in 1 year at 8% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹58400 at 15% per year for 2 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹5200 at 5% per year for 2 years (in ₹)?
34. 34.A town has 13600 people. The population grows by 20% every year. What will the population be after 1 year?
35. 35.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹21000 grow to in 3 years at 20% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹21700 at 10% per year for 2 years, compounded every year (in ₹).
38. 38.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
40. 40.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?

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