Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 806 · 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 ₹37500 grow to in 2 years at 8% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
3. 3.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
4. 4.A scooter is worth ₹27600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
5. 5.What amount will ₹33500 grow to in 3 years at 20% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹29200 at 5% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹27200 at 15% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹47000 at 20% per year for 3 years, compounded every year (in ₹).
9. 9.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
10. 10.What amount will ₹11800 grow to in 2 years at 10% per year compound interest (in ₹)?
11. 11.What amount will ₹54700 grow to in 1 year at 20% per year compound interest (in ₹)?
12. 12.A town has 11000 people. The population grows by 20% every year. What will the population be after 3 years?
13. 13.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
14. 14.What amount will ₹44600 grow to in 2 years at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹38500 at 20% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹30000 grow to in 2 years at 5% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹36400 at 15% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
20. 20.A town has 41900 people. The population grows by 12% every year. What will the population be after 1 year?
21. 21.A scooter is worth ₹58800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
22. 22.A town has 12400 people. The population grows by 25% every year. What will the population be after 2 years?
23. 23.What is the difference between the compound interest and the simple interest on ₹44800 at 25% per year for 2 years (in ₹)?
24. 24.What amount will ₹39500 grow to in 3 years at 20% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹37500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
27. 27.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
28. 28.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
29. 29.A town has 44000 people. The population grows by 10% every year. What will the population be after 3 years?
30. 30.What is the difference between the compound interest and the simple interest on ₹11200 at 15% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹23300 at 25% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹18200 grow to in 1 year at 5% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹12700 at 4% per year for 1 year, compounded every year (in ₹).
34. 34.Find the compound interest on ₹30000 at 8% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹46100 at 10% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹42100 at 25% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹51800 grow to in 1 year at 8% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
39. 39.Find the compound interest on ₹4800 at 25% per year for 3 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹29000 at 10% per year for 2 years (in ₹)?

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