Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 814 · 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 2740 litres. 5% of the water is used. How many litres are left?
2. 2.The price of a bicycle is ₹500. It goes up by 20%. What is the new price (in ₹)?
3. 3.A shop sells 1160 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
4. 4.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
5. 5.A shop sells 2640 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
6. 6.The price of a school bag changes from ₹1140 to ₹1254. By what percent did it go up?
7. 7.A water tank holds 4580 litres. 40% of the water is used. How many litres are left?
8. 8.A water tank holds 60 litres. 40% of the water is used. How many litres are left?
9. 9.The price of a bicycle is ₹1320. It goes up by 25%. What is the new price (in ₹)?
10. 10.A water tank holds 4140 litres. 25% of the water is used. How many litres are left?
11. 11.A shop sells 3960 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
12. 12.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
13. 13.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
14. 14.The price of a school bag changes from ₹1980 to ₹1782. By what percent did it come down?
15. 15.A water tank holds 4080 litres. 10% of the water is used. How many litres are left?
16. 16.A town has 3160 people. Its population grows by 30%. How many people live there now?
17. 17.The price of a bicycle is ₹240. It goes up by 5%. What is the new price (in ₹)?
18. 18.A shop sells 2440 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
19. 19.A water tank holds 180 litres. 30% of the water is used. How many litres are left?
20. 20.The price of a bicycle is ₹1080. It goes up by 10%. What is the new price (in ₹)?
21. 21.The price of a school bag changes from ₹3240 to ₹2754. By what percent did it come down?
22. 22.A price comes down by 15% and then comes down by 25% more. By what percent has it come down in all? =
23. 23.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
24. 24.The price of a school bag changes from ₹2060 to ₹2369. By what percent did it go up?
25. 25.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
26. 26.A price comes down by 25% and then comes down by 40% more. By what percent has it come down in all? =
27. 27.The price of a bicycle is ₹2420. It goes up by 5%. What is the new price (in ₹)?
28. 28.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
29. 29.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
30. 30.The price of a bicycle is ₹1160. It goes up by 15%. What is the new price (in ₹)?
31. 31.A water tank holds 3940 litres. 30% of the water is used. How many litres are left?
32. 32.A price comes down by 50% and then comes down by 30% more. By what percent has it come down in all? =
33. 33.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
34. 34.A water tank holds 4340 litres. 30% of the water is used. How many litres are left?
35. 35.A water tank holds 1780 litres. 10% of the water is used. How many litres are left?
36. 36.A town has 980 people. Its population grows by 20%. How many people live there now?
37. 37.The price of a bicycle is ₹1440. It goes up by 40%. What is the new price (in ₹)?
38. 38.A town has 4480 people. Its population grows by 15%. How many people live there now?
39. 39.A shop sells 2600 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
40. 40.A water tank holds 1920 litres. 5% of the water is used. How many litres are left?

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