Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 92 · 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 2200 litres. 20% of the water is used. How many litres are left?
2. 2.The price of a school bag changes from ₹3140 to ₹4082. By what percent did it go up?
3. 3.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
4. 4.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
5. 5.The price of a bicycle is ₹1480. It goes up by 30%. What is the new price (in ₹)?
6. 6.The price of a bicycle is ₹4840. It goes up by 40%. What is the new price (in ₹)?
7. 7.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
8. 8.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
9. 9.A water tank holds 1700 litres. 20% of the water is used. How many litres are left?
10. 10.A town has 2220 people. Its population grows by 10%. How many people live there now?
11. 11.A price goes up by 30% and then goes up by 40% more. By what percent has it gone up in all? =
12. 12.A shop sells 4880 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
13. 13.The price of a bicycle is ₹460. It goes up by 20%. What is the new price (in ₹)?
14. 14.A water tank holds 2980 litres. 20% of the water is used. How many litres are left?
15. 15.A shop sells 4540 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
16. 16.A shop sells 1480 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 school bag changes from ₹1460 to ₹1606. By what percent did it go up?
18. 18.A price comes down by 30% and then comes down by 50% more. By what percent has it come down in all? =
19. 19.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
20. 20.A shop sells 960 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
21. 21.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
22. 22.The price of a bicycle is ₹3340. It goes up by 50%. What is the new price (in ₹)?
23. 23.A shop sells 620 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
24. 24.The price of a bicycle is ₹400. It goes up by 15%. What is the new price (in ₹)?
25. 25.A water tank holds 440 litres. 20% of the water is used. How many litres are left?
26. 26.A water tank holds 2060 litres. 10% of the water is used. How many litres are left?
27. 27.The price of a bicycle is ₹4200. It goes up by 10%. What is the new price (in ₹)?
28. 28.The price of a bicycle is ₹1160. It goes up by 50%. What is the new price (in ₹)?
29. 29.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
30. 30.A water tank holds 800 litres. 5% of the water is used. How many litres are left?
31. 31.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
32. 32.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
33. 33.A town has 1520 people. Its population grows by 25%. How many people live there now?
34. 34.A shop sells 680 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
35. 35.A water tank holds 3920 litres. 40% of the water is used. How many litres are left?
36. 36.The price of a bicycle is ₹1620. It goes up by 25%. What is the new price (in ₹)?
37. 37.The price of a bicycle is ₹2800. It goes up by 10%. What is the new price (in ₹)?
38. 38.The price of a school bag changes from ₹360 to ₹396. By what percent did it go up?
39. 39.A town has 2300 people. Its population grows by 30%. How many people live there now?
40. 40.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =

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