Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 694 · 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 ₹25900 at 10% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹18400 at 5% per year for 2 years (in ₹)?
3. 3.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
4. 4.What amount will ₹48500 grow to in 1 year at 4% per year compound interest (in ₹)?
5. 5.What amount will ₹57300 grow to in 1 year at 25% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹29000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
7. 7.A town has 14400 people. The population grows by 15% every year. What will the population be after 2 years?
8. 8.A scooter is worth ₹10800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
9. 9.A town has 54000 people. The population grows by 10% every year. What will the population be after 3 years?
10. 10.Find the compound interest on ₹43200 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹7400 at 20% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹55000 at 8% per year for 2 years (in ₹)?
13. 13.What amount will ₹49000 grow to in 1 year at 10% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹54900 at 5% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹3200 at 8% per year for 1 year, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹58400 at 20% per year for 2 years (in ₹)?
17. 17.A town has 22500 people. The population grows by 8% every year. What will the population be after 2 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹15600 at 25% per year for 2 years (in ₹)?
19. 19.A town has 14900 people. The population grows by 4% every year. What will the population be after 1 year?
20. 20.What amount will ₹11700 grow to in 2 years at 10% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹24400 at 25% per year for 2 years (in ₹)?
22. 22.A town has 14900 people. The population grows by 10% every year. What will the population be after 1 year?
23. 23.What is the difference between the compound interest and the simple interest on ₹10000 at 5% per year for 2 years (in ₹)?
24. 24.What amount will ₹11200 grow to in 2 years at 20% per year compound interest (in ₹)?
25. 25.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹52600 at 5% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹37500 at 4% per year for 2 years, compounded every year (in ₹).
28. 28.A town has 27000 people. The population grows by 10% every year. What will the population be after 3 years?
29. 29.What amount will ₹9600 grow to in 1 year at 20% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹2200 at 5% per year for 1 year, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹38800 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹26100. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
35. 35.A scooter is worth ₹43200. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹15600 at 20% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
38. 38.What amount will ₹9900 grow to in 2 years at 10% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹20300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
40. 40.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?

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