Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 195 · 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 ₹43200 grow to in 3 years at 25% per year compound interest (in ₹)?
2. 2.What amount will ₹44900 grow to in 1 year at 20% per year compound interest (in ₹)?
3. 3.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹16800 at 5% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 11200 people. The population grows by 25% every year. What will the population be after 3 years?
6. 6.What is the difference between the compound interest and the simple interest on ₹24400 at 25% per year for 2 years (in ₹)?
7. 7.What amount will ₹8000 grow to in 2 years at 10% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹18500 at 20% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹27200. Its value falls by 15% 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 ₹34000 at 15% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹31300 at 12% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹32600 at 8% per year for 1 year, compounded every year (in ₹).
13. 13.What amount will ₹29400 grow to in 1 year at 12% per year compound interest (in ₹)?
14. 14.What amount will ₹30000 grow to in 2 years at 4% per year compound interest (in ₹)?
15. 15.A town has 32000 people. The population grows by 5% every year. What will the population be after 3 years?
16. 16.Find the compound interest on ₹50600 at 10% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹50000 grow to in 2 years at 12% per year compound interest (in ₹)?
18. 18.What amount will ₹41600 grow to in 3 years at 25% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹39800 at 10% per year for 2 years (in ₹)?
20. 20.A scooter is worth ₹6000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹9000 at 10% per year for 2 years (in ₹)?
22. 22.A town has 27200 people. The population grows by 15% every year. What will the population be after 2 years?
23. 23.What amount will ₹13500 grow to in 1 year at 15% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹17000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
25. 25.What amount will ₹56400 grow to in 2 years at 5% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹2700 at 10% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹23200 grow to in 2 years at 5% per year compound interest (in ₹)?
28. 28.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
29. 29.What amount will ₹30800 grow to in 1 year at 12% per year compound interest (in ₹)?
30. 30.What amount will ₹27000 grow to in 1 year at 25% per year compound interest (in ₹)?
31. 31.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
32. 32.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹48000 at 20% per year for 3 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹24400 at 10% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹55900 at 20% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹52400 at 25% per year for 2 years (in ₹)?
38. 38.What amount will ₹7700 grow to in 1 year at 8% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹22400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
40. 40.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?

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