Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 514 · 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.A scooter is worth ₹58700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
2. 2.A town has 32200 people. The population grows by 10% every year. What will the population be after 2 years?
3. 3.A scooter is worth ₹56000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
5. 5.What amount will ₹59600 grow to in 1 year at 4% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹49200 at 5% per year for 2 years, compounded every year (in ₹).
7. 7.What amount will ₹6400 grow to in 2 years at 5% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹36800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
10. 10.What amount will ₹17600 grow to in 2 years at 20% per year compound interest (in ₹)?
11. 11.What amount will ₹14400 grow to in 3 years at 25% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹30500 at 20% per year for 2 years (in ₹)?
13. 13.What amount will ₹40000 grow to in 2 years at 12% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹31200 at 5% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹36000 at 15% per year for 2 years (in ₹)?
16. 16.What amount will ₹15200 grow to in 1 year at 25% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹15000 at 20% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹50400 at 5% per year for 2 years (in ₹)?
20. 20.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹6400. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹8800 at 15% per year for 2 years (in ₹)?
23. 23.What amount will ₹22900 grow to in 1 year at 20% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹58800 at 15% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
26. 26.What amount will ₹18300 grow to in 1 year at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹24700 at 8% per year for 1 year, compounded every year (in ₹).
28. 28.Find the compound interest on ₹2700 at 15% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹49600 grow to in 3 years at 25% per year compound interest (in ₹)?
30. 30.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
31. 31.What amount will ₹9300 grow to in 1 year at 10% per year compound interest (in ₹)?
32. 32.A scooter is worth ₹59000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
33. 33.Find the compound interest on ₹10400 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹25300 at 4% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹16000 at 25% per year for 3 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹57300 at 25% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹38900 at 25% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹28000 at 25% per year for 2 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹57500 at 8% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹12000 at 15% per year for 2 years (in ₹)?

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