Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 47 · 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 ₹27400. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
2. 2.A scooter is worth ₹52000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹9500 at 20% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
5. 5.A scooter is worth ₹22000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
6. 6.A scooter is worth ₹50000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹48300 at 10% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹17600 at 25% per year for 2 years (in ₹)?
9. 9.A town has 11300 people. The population grows by 4% every year. What will the population be after 1 year?
10. 10.Find the compound interest on ₹10100 at 20% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹23600 at 25% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹3600 at 25% per year for 2 years, compounded every year (in ₹).
13. 13.A town has 12500 people. The population grows by 12% every year. What will the population be after 2 years?
14. 14.What amount will ₹60000 grow to in 2 years at 4% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹48800 at 15% per year for 1 year, compounded every year (in ₹).
16. 16.A town has 17000 people. The population grows by 10% every year. What will the population be after 3 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹27200 at 5% per year for 2 years (in ₹)?
18. 18.A town has 22000 people. The population grows by 10% every year. What will the population be after 3 years?
19. 19.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹51400 at 10% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹45000 at 8% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹15600 grow to in 1 year at 25% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹19700 at 10% per year for 2 years, compounded every year (in ₹).
24. 24.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
25. 25.Find the compound interest on ₹49200 at 15% per year for 2 years, compounded every year (in ₹).
26. 26.What amount will ₹48200 grow to in 2 years at 10% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹60000 at 15% per year for 2 years (in ₹)?
28. 28.What amount will ₹12800 grow to in 2 years at 15% per year compound interest (in ₹)?
29. 29.What amount will ₹35200 grow to in 2 years at 5% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹55900 at 5% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
32. 32.A town has 52200 people. The population grows by 25% 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 ₹10000 at 4% per year for 2 years (in ₹)?
34. 34.What amount will ₹51200 grow to in 2 years at 15% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹27200 at 15% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹34400 at 15% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?
38. 38.What amount will ₹41500 grow to in 3 years at 20% per year compound interest (in ₹)?
39. 39.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
40. 40.What amount will ₹29300 grow to in 1 year at 12% per year compound interest (in ₹)?

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