Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 111 · 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 1840 litres. 5% of the water is used. How many litres are left?
2. 2.A shop sells 500 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
3. 3.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
4. 4.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
5. 5.A water tank holds 4560 litres. 15% of the water is used. How many litres are left?
6. 6.A shop sells 3780 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
7. 7.The price of a bicycle is ₹3680. It goes up by 15%. What is the new price (in ₹)?
8. 8.A town has 500 people. Its population grows by 10%. How many people live there now?
9. 9.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
10. 10.A water tank holds 3020 litres. 50% of the water is used. How many litres are left?
11. 11.A water tank holds 2340 litres. 40% of the water is used. How many litres are left?
12. 12.The price of a school bag changes from ₹2460 to ₹2952. By what percent did it go up?
13. 13.The price of a school bag changes from ₹4980 to ₹4731. By what percent did it come down?
14. 14.A price goes up by 20% and then comes down by 10%. By what percent has it gone up in all? =
15. 15.The price of a bicycle is ₹1240. It goes up by 10%. What is the new price (in ₹)?
16. 16.The price of a bicycle is ₹2220. It goes up by 5%. What is the new price (in ₹)?
17. 17.A water tank holds 1660 litres. 10% of the water is used. How many litres are left?
18. 18.A shop sells 2980 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
19. 19.A shop sells 1560 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
20. 20.The price of a bicycle is ₹300. It goes up by 20%. What is the new price (in ₹)?
21. 21.The price of a bicycle is ₹2240. It goes up by 30%. What is the new price (in ₹)?
22. 22.A shop sells 1860 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
23. 23.The price of a school bag changes from ₹920 to ₹1058. By what percent did it go up?
24. 24.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
25. 25.The price of a school bag changes from ₹4180 to ₹4389. By what percent did it go up?
26. 26.A water tank holds 3740 litres. 25% of the water is used. How many litres are left?
27. 27.The price of a school bag changes from ₹3700 to ₹5180. By what percent did it go up?
28. 28.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
29. 29.The price of a school bag changes from ₹660 to ₹396. By what percent did it come down?
30. 30.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
31. 31.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
32. 32.The price of a bicycle is ₹4180. It goes up by 30%. What is the new price (in ₹)?
33. 33.A water tank holds 4520 litres. 30% of the water is used. How many litres are left?
34. 34.The price of a school bag changes from ₹4740 to ₹4977. By what percent did it go up?
35. 35.The price of a school bag changes from ₹4400 to ₹3740. By what percent did it come down?
36. 36.A town has 1060 people. Its population grows by 25%. How many people live there now?
37. 37.A shop sells 2280 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
38. 38.A shop sells 960 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
39. 39.The price of a school bag changes from ₹920 to ₹1012. By what percent did it go up?
40. 40.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =

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