Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 217 · 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 ₹15300 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹26800 at 5% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹39800 at 8% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹12500 at 4% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 11400 people. The population grows by 10% every year. What will the population be after 1 year?
6. 6.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
7. 7.A town has 18000 people. The population grows by 10% every year. What will the population be after 3 years?
8. 8.Find the compound interest on ₹47200 at 15% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹50000 at 10% per year for 2 years (in ₹)?
10. 10.A scooter is worth ₹42500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
11. 11.Find the compound interest on ₹38000 at 10% per year for 1 year, compounded every year (in ₹).
12. 12.A town has 50200 people. The population grows by 10% every year. What will the population be after 2 years?
13. 13.What amount will ₹55000 grow to in 2 years at 12% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹20900 at 20% per year for 2 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹15700 at 5% per year for 1 year, compounded every year (in ₹).
16. 16.A scooter is worth ₹17500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
17. 17.What amount will ₹35000 grow to in 2 years at 12% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹55900 at 10% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹21400 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹3600 grow to in 2 years at 15% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹54400 at 5% per year for 2 years (in ₹)?
22. 22.A town has 8300 people. The population grows by 8% every year. What will the population be after 1 year?
23. 23.A scooter is worth ₹26800. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
24. 24.What amount will ₹52800 grow to in 2 years at 20% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹15000 at 10% per year for 3 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹31600 at 10% per year for 2 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
29. 29.What amount will ₹41300 grow to in 1 year at 15% per year compound interest (in ₹)?
30. 30.A town has 17300 people. The population grows by 5% every year. What will the population be after 1 year?
31. 31.Find the compound interest on ₹48100 at 20% per year for 1 year, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹41400 at 20% per year for 2 years (in ₹)?
33. 33.A town has 6500 people. The population grows by 20% every year. What will the population be after 1 year?
34. 34.A town has 27200 people. The population grows by 10% every year. What will the population be after 2 years?
35. 35.Find the compound interest on ₹3300 at 5% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
37. 37.What amount will ₹42500 grow to in 2 years at 8% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
40. 40.A town has 47600 people. The population grows by 10% every year. What will the population be after 2 years?

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