Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 5 · 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 is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
3. 3.A town has 55600 people. The population grows by 5% every year. What will the population be after 2 years?
4. 4.A town has 18800 people. The population grows by 5% every year. What will the population be after 2 years?
5. 5.A scooter is worth ₹25000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
6. 6.Find the compound interest on ₹40200 at 20% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
8. 8.What amount will ₹9900 grow to in 1 year at 12% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹38000 at 5% per year for 2 years (in ₹)?
10. 10.A town has 5200 people. The population grows by 5% every year. What will the population be after 2 years?
11. 11.What amount will ₹7500 grow to in 2 years at 8% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹28100. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
13. 13.Find the compound interest on ₹40800 at 15% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹24000 at 25% per year for 3 years, compounded every year (in ₹).
15. 15.A scooter is worth ₹2000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
16. 16.A scooter is worth ₹37500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
17. 17.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.What amount will ₹5000 grow to in 2 years at 4% per year compound interest (in ₹)?
19. 19.What amount will ₹27300 grow to in 2 years at 20% per year compound interest (in ₹)?
20. 20.A town has 17100 people. The population grows by 10% every year. What will the population be after 2 years?
21. 21.A scooter is worth ₹9600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
22. 22.A town has 52700 people. The population grows by 10% every year. What will the population be after 1 year?
23. 23.What amount will ₹51800 grow to in 1 year at 4% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹42400 at 5% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹33800 at 5% per year for 1 year, compounded every year (in ₹).
26. 26.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
27. 27.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹16000 at 20% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹35500 at 8% per year for 1 year, compounded every year (in ₹).
30. 30.A town has 7900 people. The population grows by 10% every year. What will the population be after 1 year?
31. 31.What amount will ₹6300 grow to in 1 year at 20% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹29200 at 25% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹57500 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 ₹3600 at 15% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹57500 at 10% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹25900. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
37. 37.What amount will ₹5500 grow to in 1 year at 12% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹18400 at 5% per year for 2 years (in ₹)?
39. 39.What amount will ₹42500 grow to in 1 year at 4% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹44900 at 20% per year for 2 years (in ₹)?

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