Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 46 · 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 ₹51900 grow to in 1 year at 15% per year compound interest (in ₹)?
2. 2.A town has 52500 people. The population grows by 4% every year. What will the population be after 2 years?
3. 3.Find the compound interest on ₹4700 at 25% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹53700 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹60000 at 12% per year for 2 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹6700 at 15% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹20900 at 20% per year for 2 years (in ₹)?
8. 8.A town has 9700 people. The population grows by 10% every year. What will the population be after 1 year?
9. 9.What is the difference between the compound interest and the simple interest on ₹48000 at 5% per year for 2 years (in ₹)?
10. 10.What amount will ₹39900 grow to in 2 years at 20% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
12. 12.What amount will ₹50400 grow to in 1 year at 5% per year compound interest (in ₹)?
13. 13.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹42000 at 20% per year for 1 year, compounded every year (in ₹).
15. 15.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
16. 16.A town has 51200 people. The population grows by 5% every year. What will the population be after 2 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹36800 at 15% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹53100 at 20% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹11200 at 15% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹37500 grow to in 2 years at 4% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹21000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
23. 23.Find the compound interest on ₹27000 at 8% per year for 1 year, compounded every year (in ₹).
24. 24.What amount will ₹35100 grow to in 1 year at 15% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹49600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
26. 26.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
27. 27.A town has 8000 people. The population grows by 10% every year. What will the population be after 2 years?
28. 28.Find the compound interest on ₹20000 at 5% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹30800 at 5% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹48000 at 15% per year for 2 years (in ₹)?
32. 32.What amount will ₹24800 grow to in 2 years at 25% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹26300 at 20% per year for 2 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹18400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹8100 at 10% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹17900. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
37. 37.Find the compound interest on ₹25900 at 12% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹50700 at 10% per year for 2 years, compounded every year (in ₹).
39. 39.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹20000 at 4% per year for 2 years, compounded every year (in ₹).

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