Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 117 · 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 ₹5300 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹45000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
3. 3.What amount will ₹18500 grow to in 1 year at 8% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹5800 at 10% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹15000 at 8% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹42500 at 4% per year for 2 years, compounded every year (in ₹).
7. 7.A scooter is worth ₹18000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
8. 8.What amount will ₹20600 grow to in 2 years at 20% per year compound interest (in ₹)?
9. 9.What amount will ₹28200 grow to in 1 year at 15% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹38500 at 20% per year for 3 years, compounded every year (in ₹).
11. 11.What amount will ₹20000 grow to in 2 years at 12% per year compound interest (in ₹)?
12. 12.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
13. 13.Find the compound interest on ₹33100 at 15% per year for 1 year, compounded every year (in ₹).
14. 14.What amount will ₹24600 grow to in 1 year at 12% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹38600 at 25% per year for 1 year, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹50800 at 10% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹43200 at 25% per year for 2 years (in ₹)?
19. 19.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
20. 20.A town has 41700 people. The population grows by 20% every year. What will the population be after 1 year?
21. 21.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹2100 at 10% per year for 2 years (in ₹)?
23. 23.What amount will ₹18800 grow to in 2 years at 25% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
26. 26.A scooter is worth ₹11200. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
27. 27.A town has 4000 people. The population grows by 10% every year. What will the population be after 3 years?
28. 28.What amount will ₹42200 grow to in 1 year at 20% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹42000 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹60000 grow to in 2 years at 4% per year compound interest (in ₹)?
31. 31.What amount will ₹28600 grow to in 1 year at 20% per year compound interest (in ₹)?
32. 32.What amount will ₹58200 grow to in 1 year at 8% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹8800 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹12900 at 8% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹27500 grow to in 2 years at 4% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹39000 at 8% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹16800 at 15% per year for 2 years (in ₹)?
38. 38.What amount will ₹41600 grow to in 3 years at 25% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
40. 40.A scooter is worth ₹51200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?

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