Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 165 · 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 ₹42400 at 5% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
3. 3.A town has 43200 people. The population grows by 25% every year. What will the population be after 3 years?
4. 4.What amount will ₹5200 grow to in 1 year at 8% per year compound interest (in ₹)?
5. 5.What amount will ₹35700 grow to in 1 year at 4% per year compound interest (in ₹)?
6. 6.A town has 56800 people. The population grows by 25% every year. What will the population be after 1 year?
7. 7.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
8. 8.What amount will ₹14900 grow to in 2 years at 20% per year compound interest (in ₹)?
9. 9.What amount will ₹20100 grow to in 1 year at 15% per year compound interest (in ₹)?
10. 10.A town has 11500 people. The population grows by 20% every year. What will the population be after 3 years?
11. 11.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹3200 at 20% per year for 2 years (in ₹)?
13. 13.What amount will ₹45000 grow to in 3 years at 20% per year compound interest (in ₹)?
14. 14.A town has 2800 people. The population grows by 25% every year. What will the population be after 2 years?
15. 15.Find the compound interest on ₹35200 at 25% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹32500 grow to in 2 years at 4% per year compound interest (in ₹)?
17. 17.What amount will ₹54000 grow to in 2 years at 5% per year compound interest (in ₹)?
18. 18.A scooter is worth ₹28600. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
19. 19.What amount will ₹47400 grow to in 1 year at 4% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
22. 22.What amount will ₹7900 grow to in 1 year at 4% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹13700 at 8% per year for 1 year, compounded every year (in ₹).
24. 24.A town has 13900 people. The population grows by 5% every year. What will the population be after 1 year?
25. 25.What amount will ₹12300 grow to in 1 year at 5% per year compound interest (in ₹)?
26. 26.A scooter is worth ₹7700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
27. 27.Find the compound interest on ₹29500 at 5% per year for 1 year, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
29. 29.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.What amount will ₹10400 grow to in 1 year at 25% per year compound interest (in ₹)?
31. 31.What amount will ₹60000 grow to in 2 years at 4% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹54000 at 25% per year for 2 years (in ₹)?
33. 33.What amount will ₹38000 grow to in 1 year at 15% per year compound interest (in ₹)?
34. 34.A town has 54500 people. The population grows by 20% every year. What will the population be after 3 years?
35. 35.What amount will ₹54700 grow to in 1 year at 25% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹24000 at 15% per year for 2 years (in ₹)?
37. 37.What amount will ₹25200 grow to in 2 years at 5% per year compound interest (in ₹)?
38. 38.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
39. 39.What amount will ₹35200 grow to in 2 years at 15% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹20000 at 10% per year for 1 year, compounded every year (in ₹).

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