Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 82 · 40 questions

The method (Start value is 100%): New value after a rise of p%: value + p% of value. After a fall: value − p% of value. Percent change = change ÷ starting value × 100. Two changes a% and b% one after the other: a + b + (a × b) ÷ 100, with a fall counted as minus.

1. 1.A town has 1600 people. Its population grows by 25%. How many people live there now?
2. 2.The price of a school bag changes from ₹1380 to ₹1725. By what percent did it go up?
3. 3.A shop sells 2740 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
4. 4.The price of a school bag changes from ₹200 to ₹300. By what percent did it go up?
5. 5.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
6. 6.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
7. 7.The price of a bicycle is ₹260. It goes up by 15%. What is the new price (in ₹)?
8. 8.The price of a bicycle is ₹1880. It goes up by 15%. What is the new price (in ₹)?
9. 9.A water tank holds 3680 litres. 25% of the water is used. How many litres are left?
10. 10.The price of a school bag changes from ₹2980 to ₹2831. By what percent did it come down?
11. 11.The price of a bicycle is ₹1260. It goes up by 25%. What is the new price (in ₹)?
12. 12.A water tank holds 5000 litres. 15% of the water is used. How many litres are left?
13. 13.A town has 520 people. Its population grows by 30%. How many people live there now?
14. 14.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
15. 15.The price of a school bag changes from ₹3180 to ₹3021. By what percent did it come down?
16. 16.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
17. 17.The price of a school bag changes from ₹700 to ₹630. By what percent did it come down?
18. 18.The price of a bicycle is ₹2100. It goes up by 50%. What is the new price (in ₹)?
19. 19.A town has 4560 people. Its population grows by 15%. How many people live there now?
20. 20.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
21. 21.The price of a school bag changes from ₹1120 to ₹672. By what percent did it come down?
22. 22.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
23. 23.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
24. 24.The price of a school bag changes from ₹700 to ₹770. By what percent did it go up?
25. 25.A water tank holds 1520 litres. 40% of the water is used. How many litres are left?
26. 26.A water tank holds 3000 litres. 15% of the water is used. How many litres are left?
27. 27.The price of a bicycle is ₹4980. It goes up by 30%. What is the new price (in ₹)?
28. 28.A town has 1620 people. Its population grows by 5%. How many people live there now?
29. 29.A town has 3760 people. Its population grows by 15%. How many people live there now?
30. 30.A water tank holds 260 litres. 30% of the water is used. How many litres are left?
31. 31.A water tank holds 2340 litres. 10% of the water is used. How many litres are left?
32. 32.A water tank holds 1100 litres. 25% of the water is used. How many litres are left?
33. 33.A shop sells 2060 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
34. 34.A water tank holds 980 litres. 15% of the water is used. How many litres are left?
35. 35.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
36. 36.A shop sells 4220 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
37. 37.The price of a school bag changes from ₹3780 to ₹5292. By what percent did it go up?
38. 38.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
39. 39.The price of a school bag changes from ₹60 to ₹66. By what percent did it go up?
40. 40.The price of a bicycle is ₹1600. It goes up by 10%. What is the new price (in ₹)?

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