Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 913 · 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.The price of a school bag changes from ₹3160 to ₹3318. By what percent did it go up?
2. 2.A shop sells 1020 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
3. 3.A water tank holds 80 litres. 20% of the water is used. How many litres are left?
4. 4.A town has 820 people. Its population grows by 40%. How many people live there now?
5. 5.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =
6. 6.A water tank holds 2300 litres. 25% of the water is used. How many litres are left?
7. 7.The price of a bicycle is ₹3140. It goes up by 50%. What is the new price (in ₹)?
8. 8.A water tank holds 440 litres. 30% of the water is used. How many litres are left?
9. 9.The price of a school bag changes from ₹940 to ₹705. By what percent did it come down?
10. 10.A town has 640 people. Its population grows by 10%. How many people live there now?
11. 11.A price goes up by 40% and then goes up by 30% more. By what percent has it gone up in all? =
12. 12.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
13. 13.The price of a school bag changes from ₹2780 to ₹2919. By what percent did it go up?
14. 14.The price of a school bag changes from ₹2440 to ₹3050. By what percent did it go up?
15. 15.A water tank holds 280 litres. 10% of the water is used. How many litres are left?
16. 16.The price of a bicycle is ₹700. It goes up by 50%. What is the new price (in ₹)?
17. 17.A shop sells 5000 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
18. 18.The price of a bicycle is ₹4620. It goes up by 15%. What is the new price (in ₹)?
19. 19.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
20. 20.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
21. 21.The price of a bicycle is ₹2220. It goes up by 10%. What is the new price (in ₹)?
22. 22.A water tank holds 4460 litres. 20% of the water is used. How many litres are left?
23. 23.A water tank holds 4720 litres. 40% of the water is used. How many litres are left?
24. 24.A water tank holds 600 litres. 40% of the water is used. How many litres are left?
25. 25.A water tank holds 4480 litres. 25% of the water is used. How many litres are left?
26. 26.A water tank holds 2700 litres. 50% of the water is used. How many litres are left?
27. 27.The price of a school bag changes from ₹4980 to ₹3486. By what percent did it come down?
28. 28.A shop sells 4140 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
29. 29.A shop sells 3400 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
30. 30.A water tank holds 2120 litres. 40% of the water is used. How many litres are left?
31. 31.The price of a bicycle is ₹2180. It goes up by 25%. What is the new price (in ₹)?
32. 32.A shop sells 4620 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
33. 33.The price of a school bag changes from ₹2660 to ₹3724. By what percent did it go up?
34. 34.A shop sells 480 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
35. 35.A price goes up by 15% and then goes up by 15% more. By what percent has it gone up in all? =
36. 36.A price goes up by 25% and then goes up by 10% more. By what percent has it gone up in all? =
37. 37.A water tank holds 1300 litres. 50% of the water is used. How many litres are left?
38. 38.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
39. 39.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
40. 40.The price of a school bag changes from ₹2680 to ₹2412. By what percent did it come down?

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