Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 971 · 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 ₹30400 grow to in 3 years at 25% per year compound interest (in ₹)?
2. 2.What amount will ₹18500 grow to in 3 years at 20% per year compound interest (in ₹)?
3. 3.What amount will ₹30000 grow to in 2 years at 15% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹33500 at 20% per year for 2 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹12600. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
7. 7.What amount will ₹20100 grow to in 1 year at 10% per year compound interest (in ₹)?
8. 8.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹52000 at 25% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹53600 at 15% per year for 2 years, compounded every year (in ₹).
11. 11.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
12. 12.What amount will ₹11500 grow to in 2 years at 10% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹34400 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹10000 grow to in 1 year at 12% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹19800. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
16. 16.What amount will ₹57500 grow to in 2 years at 8% per year compound interest (in ₹)?
17. 17.What amount will ₹9000 grow to in 1 year at 20% per year compound interest (in ₹)?
18. 18.What amount will ₹37500 grow to in 1 year at 8% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹16200 at 20% per year for 2 years, compounded every year (in ₹).
20. 20.A town has 32000 people. The population grows by 25% every year. What will the population be after 2 years?
21. 21.Find the compound interest on ₹41100 at 5% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹50000 at 8% per year for 2 years, compounded every year (in ₹).
23. 23.A town has 10100 people. The population grows by 8% every year. What will the population be after 1 year?
24. 24.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹7500 at 10% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹45200 at 5% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹20800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
29. 29.Find the compound interest on ₹52500 at 12% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹50700 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹34300 at 8% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹55800 at 10% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹2900 at 8% per year for 1 year, compounded every year (in ₹).
34. 34.A town has 17600 people. The population grows by 25% every year. What will the population be after 1 year?
35. 35.What amount will ₹24800 grow to in 1 year at 10% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹38000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
37. 37.A scooter is worth ₹1600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
38. 38.What amount will ₹27000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.What amount will ₹3600 grow to in 1 year at 12% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹7200 at 25% per year for 2 years (in ₹)?

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