Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 543 · 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 ₹4260 to ₹6390. By what percent did it go up?
2. 2.A water tank holds 4540 litres. 10% of the water is used. How many litres are left?
3. 3.A shop sells 3360 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
4. 4.A shop sells 3880 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
5. 5.A shop sells 4100 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
6. 6.The price of a school bag changes from ₹180 to ₹252. By what percent did it go up?
7. 7.A town has 980 people. Its population grows by 5%. How many people live there now?
8. 8.A water tank holds 2840 litres. 5% of the water is used. How many litres are left?
9. 9.The price of a school bag changes from ₹980 to ₹1127. By what percent did it go up?
10. 10.The price of a school bag changes from ₹2240 to ₹2352. By what percent did it go up?
11. 11.A price comes down by 10% and then comes down by 25% more. By what percent has it come down in all? =
12. 12.The price of a bicycle is ₹2400. It goes up by 40%. What is the new price (in ₹)?
13. 13.The price of a bicycle is ₹220. It goes up by 25%. What is the new price (in ₹)?
14. 14.A water tank holds 1980 litres. 5% of the water is used. How many litres are left?
15. 15.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
16. 16.A water tank holds 540 litres. 40% of the water is used. How many litres are left?
17. 17.A price goes up by 10% and then goes up by 10% more. By what percent has it gone up in all? =
18. 18.A water tank holds 1720 litres. 30% of the water is used. How many litres are left?
19. 19.A shop sells 3560 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
20. 20.The price of a bicycle is ₹2780. It goes up by 20%. What is the new price (in ₹)?
21. 21.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
22. 22.The price of a bicycle is ₹4000. It goes up by 5%. What is the new price (in ₹)?
23. 23.The price of a bicycle is ₹1040. It goes up by 25%. What is the new price (in ₹)?
24. 24.The price of a bicycle is ₹2800. It goes up by 5%. What is the new price (in ₹)?
25. 25.The price of a school bag changes from ₹2300 to ₹2760. By what percent did it go up?
26. 26.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
27. 27.A shop sells 2880 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
28. 28.A water tank holds 2140 litres. 25% of the water is used. How many litres are left?
29. 29.The price of a school bag changes from ₹4180 to ₹5434. By what percent did it go up?
30. 30.A water tank holds 3000 litres. 10% of the water is used. How many litres are left?
31. 31.A water tank holds 2960 litres. 40% of the water is used. How many litres are left?
32. 32.The price of a bicycle is ₹2200. It goes up by 10%. What is the new price (in ₹)?
33. 33.The price of a school bag changes from ₹4340 to ₹3038. By what percent did it come down?
34. 34.A price goes up by 15% and then comes down by 10%. By what percent has it gone up in all? =
35. 35.The price of a bicycle is ₹1040. It goes up by 40%. What is the new price (in ₹)?
36. 36.A shop sells 4420 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
37. 37.The price of a school bag changes from ₹4140 to ₹6210. By what percent did it go up?
38. 38.A water tank holds 1500 litres. 5% of the water is used. How many litres are left?
39. 39.The price of a bicycle is ₹3760. It goes up by 20%. What is the new price (in ₹)?
40. 40.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =

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