Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 473 · 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 ₹15000 at 12% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹16000 at 15% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹52500 at 20% per year for 3 years, compounded every year (in ₹).
4. 4.A town has 12500 people. The population grows by 12% every year. What will the population be after 2 years?
5. 5.What amount will ₹7600 grow to in 1 year at 20% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹52800 at 25% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹21000 at 10% per year for 3 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹46000 at 25% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹7100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹16400 at 5% per year for 2 years (in ₹)?
11. 11.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
12. 12.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹2500 at 8% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹52500 at 8% per year for 2 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹18300 at 10% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹7500 grow to in 2 years at 8% per year compound interest (in ₹)?
17. 17.What amount will ₹4000 grow to in 3 years at 10% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
19. 19.What amount will ₹6700 grow to in 1 year at 20% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹9600 at 25% per year for 3 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹4000 at 15% per year for 1 year, compounded every year (in ₹).
22. 22.A scooter is worth ₹12800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
23. 23.What amount will ₹47000 grow to in 2 years at 20% per year compound interest (in ₹)?
24. 24.What amount will ₹23200 grow to in 2 years at 5% per year compound interest (in ₹)?
25. 25.What amount will ₹4500 grow to in 1 year at 25% per year compound interest (in ₹)?
26. 26.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
27. 27.A town has 24500 people. The population grows by 20% every year. What will the population be after 1 year?
28. 28.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
29. 29.What amount will ₹29200 grow to in 2 years at 5% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹12600. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹38600 at 12% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹5100 at 15% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹2000 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹55700 at 8% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹25700 at 15% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹42100 at 20% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹54000 at 8% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹15900 at 15% per year for 1 year, compounded every year (in ₹).

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