Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 87 · 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.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹55200 grow to in 1 year at 8% per year compound interest (in ₹)?
3. 3.What amount will ₹49300 grow to in 1 year at 8% per year compound interest (in ₹)?
4. 4.What amount will ₹51200 grow to in 2 years at 5% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.What amount will ₹24600 grow to in 1 year at 10% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹16300 at 10% per year for 2 years (in ₹)?
8. 8.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
9. 9.A scooter is worth ₹47000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
10. 10.What amount will ₹44800 grow to in 3 years at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹35700 at 20% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹27100 at 20% per year for 2 years (in ₹)?
14. 14.What amount will ₹59200 grow to in 2 years at 25% per year compound interest (in ₹)?
15. 15.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
16. 16.Find the compound interest on ₹25000 at 8% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹8800 at 20% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹42400 at 15% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹52500 at 12% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.A town has 36400 people. The population grows by 15% every year. What will the population be after 2 years?
22. 22.Find the compound interest on ₹33000 at 12% per year for 1 year, compounded every year (in ₹).
23. 23.A scooter is worth ₹6400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
25. 25.What amount will ₹43600 grow to in 1 year at 4% per year compound interest (in ₹)?
26. 26.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹49600 at 10% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
29. 29.What amount will ₹18000 grow to in 1 year at 15% per year compound interest (in ₹)?
30. 30.What amount will ₹57400 grow to in 1 year at 5% per year compound interest (in ₹)?
31. 31.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?
32. 32.What amount will ₹37600 grow to in 1 year at 10% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹24800 at 20% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹51200 at 25% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
36. 36.What amount will ₹42500 grow to in 2 years at 12% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹5200 at 15% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹3600 at 20% per year for 1 year, compounded every year (in ₹).
39. 39.A town has 33000 people. The population grows by 4% every year. What will the population be after 1 year?
40. 40.A town has 32000 people. The population grows by 10% every year. What will the population be after 3 years?

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