Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 491 · 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 ₹50000 at 8% per year for 2 years (in ₹)?
2. 2.A town has 12000 people. The population grows by 15% every year. What will the population be after 2 years?
3. 3.Find the compound interest on ₹52500 at 8% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹16700 at 10% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹19600 at 20% per year for 2 years, compounded every year (in ₹).
6. 6.A town has 52700 people. The population grows by 12% every year. What will the population be after 1 year?
7. 7.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
8. 8.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
9. 9.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹16700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
11. 11.What amount will ₹36400 grow to in 1 year at 15% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹13200 at 5% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹40000 at 5% per year for 2 years (in ₹)?
15. 15.What amount will ₹27500 grow to in 2 years at 8% per year compound interest (in ₹)?
16. 16.What amount will ₹55900 grow to in 1 year at 15% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹38000 at 15% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹37500 at 4% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹55600 at 5% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹37500 at 15% per year for 1 year, compounded every year (in ₹).
22. 22.A scooter is worth ₹47200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
23. 23.What amount will ₹44600 grow to in 2 years at 10% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹44800 at 25% per year for 2 years (in ₹)?
25. 25.What amount will ₹18800 grow to in 2 years at 20% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹36400 at 20% per year for 1 year, compounded every year (in ₹).
27. 27.A scooter is worth ₹32500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹54800 at 5% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹17100 at 20% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹8800 at 5% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹8900 at 5% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹44800 at 10% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹35200 at 25% per year for 3 years, compounded every year (in ₹).
34. 34.What amount will ₹9500 grow to in 1 year at 10% per year compound interest (in ₹)?
35. 35.What amount will ₹48300 grow to in 1 year at 8% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹35600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹28000 at 15% per year for 2 years (in ₹)?
38. 38.What amount will ₹42000 grow to in 2 years at 25% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹13600 at 20% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹52900 at 10% per year for 2 years (in ₹)?

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