Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 108 · 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.Find the compound interest on ₹2500 at 4% per year for 2 years, compounded every year (in ₹).
2. 2.What amount will ₹13000 grow to in 3 years at 20% per year compound interest (in ₹)?
3. 3.A town has 56500 people. The population grows by 20% every year. What will the population be after 2 years?
4. 4.What amount will ₹34000 grow to in 3 years at 10% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹17400. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
6. 6.What amount will ₹14700 grow to in 1 year at 8% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹46500 at 20% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?
9. 9.What amount will ₹42800 grow to in 2 years at 5% per year compound interest (in ₹)?
10. 10.What amount will ₹33600 grow to in 2 years at 20% per year compound interest (in ₹)?
11. 11.What amount will ₹60000 grow to in 2 years at 8% per year compound interest (in ₹)?
12. 12.A town has 15600 people. The population grows by 15% every year. What will the population be after 2 years?
13. 13.Find the compound interest on ₹43400 at 5% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹11000 grow to in 2 years at 20% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹11900. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
16. 16.What amount will ₹31200 grow to in 1 year at 20% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹48300 at 10% per year for 2 years (in ₹)?
18. 18.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
20. 20.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹49000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
22. 22.What amount will ₹28800 grow to in 2 years at 15% per year compound interest (in ₹)?
23. 23.A scooter is worth ₹24800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
24. 24.What amount will ₹4300 grow to in 1 year at 12% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹14800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹23300 at 10% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹46700 at 10% per year for 2 years, compounded every year (in ₹).
28. 28.What amount will ₹17700 grow to in 1 year at 10% per year compound interest (in ₹)?
29. 29.A scooter is worth ₹8900. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
30. 30.What amount will ₹32200 grow to in 2 years at 10% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹10200 at 10% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹25600 at 25% per year for 3 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹9400 at 15% per year for 1 year, compounded every year (in ₹).
34. 34.Find the compound interest on ₹7500 at 12% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹32500 grow to in 1 year at 10% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹45300 at 10% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹15000 at 12% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹36600 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.A town has 37500 people. The population grows by 4% every year. What will the population be after 2 years?
40. 40.Find the compound interest on ₹32000 at 20% per year for 3 years, compounded every year (in ₹).

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