Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 14 · 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 ₹38000 at 10% per year for 2 years (in ₹)?
2. 2.A town has 5500 people. The population grows by 4% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹38800 at 5% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹4800 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.What amount will ₹42500 grow to in 3 years at 20% per year compound interest (in ₹)?
6. 6.A town has 8800 people. The population grows by 25% every year. What will the population be after 1 year?
7. 7.What amount will ₹7800 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹44800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹27000 at 4% per year for 1 year, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹28500 at 10% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹47200 at 15% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
14. 14.What amount will ₹30000 grow to in 2 years at 4% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹7200 at 5% per year for 2 years (in ₹)?
16. 16.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
17. 17.What amount will ₹37500 grow to in 2 years at 8% per year compound interest (in ₹)?
18. 18.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
20. 20.What amount will ₹33500 grow to in 3 years at 20% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹30400. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹44800 at 15% per year for 2 years (in ₹)?
23. 23.What amount will ₹9600 grow to in 2 years at 15% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
25. 25.A scooter is worth ₹44800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹57500 at 8% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹49000 at 25% per year for 1 year, compounded every year (in ₹).
29. 29.A scooter is worth ₹6700. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
30. 30.A scooter is worth ₹32700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹37000 at 10% per year for 2 years, compounded every year (in ₹).
32. 32.A town has 42500 people. The population grows by 8% every year. What will the population be after 2 years?
33. 33.What amount will ₹22500 grow to in 2 years at 4% per year compound interest (in ₹)?
34. 34.A town has 21300 people. The population grows by 10% every year. What will the population be after 2 years?
35. 35.Find the compound interest on ₹58000 at 25% per year for 2 years, compounded every year (in ₹).
36. 36.A town has 15100 people. The population grows by 10% every year. What will the population be after 1 year?
37. 37.What amount will ₹16100 grow to in 1 year at 12% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹50300 at 10% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
40. 40.What amount will ₹43200 grow to in 2 years at 5% per year compound interest (in ₹)?

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