Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 68 · 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 ₹33200 grow to in 2 years at 5% per year compound interest (in ₹)?
2. 2.What amount will ₹53200 grow to in 2 years at 5% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹16400. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹12400 at 15% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹36000 at 25% per year for 2 years (in ₹)?
6. 6.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?
7. 7.Find the compound interest on ₹28300 at 12% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹55200 at 15% per year for 1 year, compounded every year (in ₹).
9. 9.A town has 23600 people. The population grows by 25% every year. What will the population be after 2 years?
10. 10.What amount will ₹31200 grow to in 2 years at 15% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹3100 at 10% per year for 2 years, compounded every year (in ₹).
13. 13.A scooter is worth ₹43200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
14. 14.Find the compound interest on ₹43600 at 4% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹32500 at 10% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹43000 at 10% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹48400 at 25% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹57900 grow to in 1 year at 20% per year compound interest (in ₹)?
19. 19.What amount will ₹38300 grow to in 1 year at 20% per year compound interest (in ₹)?
20. 20.A town has 57200 people. The population grows by 8% every year. What will the population be after 1 year?
21. 21.A scooter is worth ₹22500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
22. 22.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.A town has 33900 people. The population grows by 8% every year. What will the population be after 1 year?
24. 24.A scooter is worth ₹39500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
25. 25.Find the compound interest on ₹50500 at 20% per year for 3 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹38400 at 5% per year for 1 year, compounded every year (in ₹).
27. 27.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
28. 28.A scooter is worth ₹10000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
29. 29.What amount will ₹41400 grow to in 1 year at 25% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
31. 31.A scooter is worth ₹16000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
32. 32.Find the compound interest on ₹9500 at 20% per year for 3 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹4100 at 10% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹56200 grow to in 2 years at 20% per year compound interest (in ₹)?
35. 35.A scooter is worth ₹48000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹11100 at 20% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹15600 at 5% per year for 2 years (in ₹)?
38. 38.What amount will ₹43800 grow to in 1 year at 4% per year compound interest (in ₹)?
39. 39.What amount will ₹26300 grow to in 1 year at 12% per year compound interest (in ₹)?
40. 40.What amount will ₹30800 grow to in 2 years at 15% per year compound interest (in ₹)?

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