Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 502 · 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 4840 litres. 15% of the water is used. How many litres are left?
2. 2.A water tank holds 1640 litres. 5% of the water is used. How many litres are left?
3. 3.The price of a school bag changes from ₹3840 to ₹2880. By what percent did it come down?
4. 4.A water tank holds 440 litres. 40% of the water is used. How many litres are left?
5. 5.The price of a school bag changes from ₹3560 to ₹1780. By what percent did it come down?
6. 6.A water tank holds 1380 litres. 5% of the water is used. How many litres are left?
7. 7.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
8. 8.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
9. 9.A water tank holds 3660 litres. 5% of the water is used. How many litres are left?
10. 10.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
11. 11.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
12. 12.The price of a bicycle is ₹1200. It goes up by 30%. What is the new price (in ₹)?
13. 13.The price of a bicycle is ₹1760. It goes up by 5%. What is the new price (in ₹)?
14. 14.The price of a school bag changes from ₹1440 to ₹864. By what percent did it come down?
15. 15.A water tank holds 120 litres. 15% of the water is used. How many litres are left?
16. 16.The price of a bicycle is ₹4640. It goes up by 40%. What is the new price (in ₹)?
17. 17.A water tank holds 2460 litres. 10% of the water is used. How many litres are left?
18. 18.A shop sells 4780 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
19. 19.The price of a bicycle is ₹1520. It goes up by 20%. What is the new price (in ₹)?
20. 20.The price of a bicycle is ₹2360. It goes up by 20%. What is the new price (in ₹)?
21. 21.A water tank holds 700 litres. 10% of the water is used. How many litres are left?
22. 22.A shop sells 780 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
23. 23.The price of a school bag changes from ₹1140 to ₹1254. By what percent did it go up?
24. 24.A shop sells 3480 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
25. 25.The price of a school bag changes from ₹3140 to ₹2355. By what percent did it come down?
26. 26.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
27. 27.A shop sells 4800 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
28. 28.A water tank holds 3880 litres. 50% of the water is used. How many litres are left?
29. 29.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
30. 30.The price of a bicycle is ₹1400. It goes up by 40%. What is the new price (in ₹)?
31. 31.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
32. 32.The price of a school bag changes from ₹2820 to ₹2397. By what percent did it come down?
33. 33.A water tank holds 4700 litres. 10% of the water is used. How many litres are left?
34. 34.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
35. 35.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
36. 36.A water tank holds 4500 litres. 20% of the water is used. How many litres are left?
37. 37.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
38. 38.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
39. 39.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
40. 40.The price of a bicycle is ₹1560. It goes up by 5%. What is the new price (in ₹)?

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