Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 957 · 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 ₹60000 grow to in 2 years at 12% per year compound interest (in ₹)?
2. 2.What amount will ₹17700 grow to in 2 years at 10% per year compound interest (in ₹)?
3. 3.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
4. 4.What amount will ₹36400 grow to in 1 year at 12% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹22900. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
6. 6.Find the compound interest on ₹15600 at 25% per year for 2 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹38800 at 25% per year for 2 years (in ₹)?
8. 8.What amount will ₹1600 grow to in 3 years at 25% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹16200. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹25200 at 5% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹43600 at 5% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹29000 grow to in 3 years at 10% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹52400 at 25% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹8800 at 5% per year for 2 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹59700 at 10% per year for 2 years (in ₹)?
17. 17.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
19. 19.A town has 43500 people. The population grows by 20% every year. What will the population be after 3 years?
20. 20.What amount will ₹8700 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹41400 at 8% per year for 1 year, compounded every year (in ₹).
22. 22.A town has 39400 people. The population grows by 20% every year. What will the population be after 1 year?
23. 23.A town has 10800 people. The population grows by 25% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹6000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹22400 at 25% per year for 3 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
29. 29.A town has 32000 people. The population grows by 15% every year. What will the population be after 2 years?
30. 30.Find the compound interest on ₹38200 at 20% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹24000 at 25% per year for 3 years, compounded every year (in ₹).
32. 32.A scooter is worth ₹10000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
33. 33.A scooter is worth ₹13200. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
34. 34.What amount will ₹37800 grow to in 2 years at 10% per year compound interest (in ₹)?
35. 35.What amount will ₹13300 grow to in 1 year at 4% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹19400 at 10% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹12400 at 15% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹26000 at 5% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹36500 at 25% per year for 1 year, compounded every year (in ₹).
40. 40.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?

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