Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 824 · 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 960 people. Its population grows by 25%. How many people live there now?
2. 2.A shop sells 4780 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
3. 3.A shop sells 4500 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
4. 4.The price of a school bag changes from ₹3020 to ₹2265. By what percent did it come down?
5. 5.A water tank holds 3440 litres. 25% of the water is used. How many litres are left?
6. 6.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
7. 7.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
8. 8.A water tank holds 720 litres. 25% of the water is used. How many litres are left?
9. 9.The price of a bicycle is ₹700. It goes up by 5%. What is the new price (in ₹)?
10. 10.A price goes up by 30% and then comes down by 20%. By what percent has it gone up in all? =
11. 11.The price of a school bag changes from ₹2860 to ₹4004. By what percent did it go up?
12. 12.The price of a bicycle is ₹600. It goes up by 5%. What is the new price (in ₹)?
13. 13.The price of a school bag changes from ₹280 to ₹322. By what percent did it go up?
14. 14.The price of a school bag changes from ₹1220 to ₹732. By what percent did it come down?
15. 15.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
16. 16.A shop sells 1460 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
17. 17.The price of a bicycle is ₹200. It goes up by 30%. What is the new price (in ₹)?
18. 18.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
19. 19.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
20. 20.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
21. 21.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
22. 22.The price of a school bag changes from ₹400 to ₹300. By what percent did it come down?
23. 23.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
24. 24.A town has 3880 people. Its population grows by 10%. How many people live there now?
25. 25.The price of a bicycle is ₹680. It goes up by 15%. What is the new price (in ₹)?
26. 26.A water tank holds 4060 litres. 50% of the water is used. How many litres are left?
27. 27.A price goes up by 50% and then comes down by 30%. By what percent has it gone up in all? =
28. 28.A water tank holds 140 litres. 50% of the water is used. How many litres are left?
29. 29.A water tank holds 1700 litres. 50% of the water is used. How many litres are left?
30. 30.A water tank holds 4860 litres. 10% of the water is used. How many litres are left?
31. 31.The price of a school bag changes from ₹300 to ₹315. By what percent did it go up?
32. 32.A water tank holds 360 litres. 10% of the water is used. How many litres are left?
33. 33.A water tank holds 3520 litres. 15% of the water is used. How many litres are left?
34. 34.A water tank holds 1040 litres. 10% of the water is used. How many litres are left?
35. 35.A town has 1920 people. Its population grows by 40%. How many people live there now?
36. 36.The price of a bicycle is ₹2780. It goes up by 25%. What is the new price (in ₹)?
37. 37.The price of a school bag changes from ₹1140 to ₹1254. By what percent did it go up?
38. 38.A water tank holds 2320 litres. 5% of the water is used. How many litres are left?
39. 39.A shop sells 1560 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
40. 40.A town has 2780 people. Its population grows by 10%. How many people live there now?

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