Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 64 · 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 water tank holds 1220 litres. 10% of the water is used. How many litres are left?
2. 2.A shop sells 2280 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
3. 3.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
4. 4.The price of a bicycle is ₹4620. It goes up by 15%. What is the new price (in ₹)?
5. 5.A shop sells 1740 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
6. 6.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
7. 7.A water tank holds 4880 litres. 15% of the water is used. How many litres are left?
8. 8.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
9. 9.The price of a school bag changes from ₹4120 to ₹5150. By what percent did it go up?
10. 10.The price of a school bag changes from ₹3260 to ₹3912. By what percent did it go up?
11. 11.A town has 680 people. Its population grows by 20%. How many people live there now?
12. 12.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
13. 13.A water tank holds 3920 litres. 5% of the water is used. How many litres are left?
14. 14.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
15. 15.The price of a school bag changes from ₹540 to ₹459. By what percent did it come down?
16. 16.A price goes up by 30% and then goes up by 20% more. By what percent has it gone up in all? =
17. 17.A water tank holds 4000 litres. 30% of the water is used. How many litres are left?
18. 18.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
19. 19.A water tank holds 1720 litres. 5% of the water is used. How many litres are left?
20. 20.The price of a school bag changes from ₹1600 to ₹1440. By what percent did it come down?
21. 21.The price of a bicycle is ₹2500. It goes up by 15%. What is the new price (in ₹)?
22. 22.A town has 960 people. Its population grows by 30%. How many people live there now?
23. 23.A town has 3880 people. Its population grows by 25%. How many people live there now?
24. 24.A water tank holds 2880 litres. 50% of the water is used. How many litres are left?
25. 25.The price of a bicycle is ₹1880. It goes up by 15%. What is the new price (in ₹)?
26. 26.The price of a bicycle is ₹4980. It goes up by 30%. What is the new price (in ₹)?
27. 27.The price of a school bag changes from ₹3460 to ₹2941. By what percent did it come down?
28. 28.The price of a bicycle is ₹760. It goes up by 5%. What is the new price (in ₹)?
29. 29.A shop sells 1420 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
30. 30.A water tank holds 3380 litres. 40% of the water is used. How many litres are left?
31. 31.A shop sells 3880 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
32. 32.A water tank holds 2380 litres. 20% of the water is used. How many litres are left?
33. 33.The price of a bicycle is ₹4920. It goes up by 30%. What is the new price (in ₹)?
34. 34.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
35. 35.The price of a bicycle is ₹1520. It goes up by 25%. What is the new price (in ₹)?
36. 36.A water tank holds 1780 litres. 50% of the water is used. How many litres are left?
37. 37.The price of a school bag changes from ₹4320 to ₹3672. By what percent did it come down?
38. 38.A water tank holds 3040 litres. 40% of the water is used. How many litres are left?
39. 39.A water tank holds 2260 litres. 50% of the water is used. How many litres are left?
40. 40.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =

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