Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 668 · 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 ₹52500 at 4% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹38400 at 20% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹39600 at 5% per year for 2 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹42100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹51000 at 10% per year for 3 years, compounded every year (in ₹).
7. 7.A town has 18500 people. The population grows by 12% every year. What will the population be after 1 year?
8. 8.What amount will ₹20400 grow to in 2 years at 15% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹25000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
10. 10.What amount will ₹12400 grow to in 1 year at 15% per year compound interest (in ₹)?
11. 11.What amount will ₹48500 grow to in 1 year at 10% per year compound interest (in ₹)?
12. 12.What amount will ₹38200 grow to in 2 years at 20% per year compound interest (in ₹)?
13. 13.What amount will ₹59900 grow to in 1 year at 5% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹19400 at 10% per year for 1 year, compounded every year (in ₹).
15. 15.A scooter is worth ₹7200. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
16. 16.A town has 16800 people. The population grows by 20% every year. What will the population be after 1 year?
17. 17.What amount will ₹11200 grow to in 2 years at 25% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹31000 at 10% per year for 3 years, compounded every year (in ₹).
19. 19.A scooter is worth ₹33200. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
20. 20.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
21. 21.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
22. 22.A town has 12200 people. The population grows by 15% every year. What will the population be after 1 year?
23. 23.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
24. 24.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹4900 at 20% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹2500 at 12% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹60000 grow to in 3 years at 10% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹49200 at 10% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹50000 grow to in 2 years at 4% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹4000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹45600 at 5% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹38800 at 25% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹50400 at 25% per year for 2 years (in ₹)?
36. 36.What amount will ₹20000 grow to in 2 years at 8% per year compound interest (in ₹)?
37. 37.What amount will ₹51000 grow to in 3 years at 20% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
39. 39.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
40. 40.What amount will ₹30400 grow to in 1 year at 12% per year compound interest (in ₹)?

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