Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 332 · 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 ₹24000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
2. 2.Find the compound interest on ₹4300 at 10% per year for 1 year, compounded every year (in ₹).
3. 3.Find the compound interest on ₹33400 at 5% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹10900 at 20% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.A scooter is worth ₹50000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
8. 8.What amount will ₹54400 grow to in 2 years at 25% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹32200 at 10% per year for 2 years (in ₹)?
10. 10.A town has 14400 people. The population grows by 25% every year. What will the population be after 3 years?
11. 11.What amount will ₹45000 grow to in 2 years at 4% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹28900 at 10% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹48000 at 15% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹37400 at 10% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹50000 at 4% per year for 2 years (in ₹)?
16. 16.What amount will ₹19600 grow to in 2 years at 5% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹28600 at 15% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹34800 grow to in 2 years at 25% per year compound interest (in ₹)?
19. 19.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹52000 at 25% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
22. 22.A town has 37700 people. The population grows by 10% every year. What will the population be after 2 years?
23. 23.A town has 24100 people. The population grows by 15% every year. What will the population be after 1 year?
24. 24.What amount will ₹58400 grow to in 1 year at 5% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹46400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
26. 26.Find the compound interest on ₹31500 at 15% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
28. 28.A town has 32000 people. The population grows by 5% every year. What will the population be after 3 years?
29. 29.A scooter is worth ₹18800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
30. 30.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹24100 at 10% per year for 1 year, compounded every year (in ₹).
32. 32.A town has 27400 people. The population grows by 8% every year. What will the population be after 1 year?
33. 33.What is the difference between the compound interest and the simple interest on ₹20400 at 25% per year for 2 years (in ₹)?
34. 34.What amount will ₹55400 grow to in 1 year at 5% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹58100 at 20% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
37. 37.A scooter is worth ₹13700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
38. 38.What amount will ₹7600 grow to in 2 years at 5% per year compound interest (in ₹)?
39. 39.What amount will ₹16000 grow to in 2 years at 25% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹19600 at 25% per year for 2 years (in ₹)?

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