Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 855 · 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 amount will ₹3200 grow to in 3 years at 25% per year compound interest (in ₹)?
2. 2.What amount will ₹3100 grow to in 1 year at 20% per year compound interest (in ₹)?
3. 3.What amount will ₹51900 grow to in 1 year at 4% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹36800 at 20% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹8600 at 20% per year for 2 years, compounded every year (in ₹).
6. 6.What amount will ₹26000 grow to in 3 years at 10% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹42500 at 8% per year for 2 years, compounded every year (in ₹).
8. 8.A town has 4400 people. The population grows by 25% every year. What will the population be after 1 year?
9. 9.What amount will ₹3000 grow to in 1 year at 12% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹50000 at 8% per year for 2 years, compounded every year (in ₹).
11. 11.What amount will ₹38800 grow to in 2 years at 25% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹10000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹19600 at 5% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹34500. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
15. 15.A town has 22400 people. The population grows by 10% every year. What will the population be after 2 years?
16. 16.What amount will ₹3900 grow to in 1 year at 20% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹10500 at 10% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹8400 at 8% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹35700 at 20% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹4300 at 10% per year for 2 years (in ₹)?
22. 22.A town has 16000 people. The population grows by 20% every year. What will the population be after 3 years?
23. 23.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹15600 at 15% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹54800 at 25% per year for 2 years (in ₹)?
26. 26.What amount will ₹4000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.A town has 16200 people. The population grows by 4% every year. What will the population be after 1 year?
28. 28.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
29. 29.What amount will ₹6600 grow to in 1 year at 10% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹12800 at 15% per year for 2 years (in ₹)?
32. 32.What amount will ₹18100 grow to in 1 year at 5% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹35600 at 5% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹25200 at 25% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹45500 at 10% per year for 2 years (in ₹)?
37. 37.What amount will ₹3200 grow to in 2 years at 5% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹3600 at 15% per year for 1 year, compounded every year (in ₹).
39. 39.A town has 48000 people. The population grows by 25% every year. What will the population be after 2 years?
40. 40.A scooter is worth ₹24000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?

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