Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 585 · 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 2660 litres. 30% of the water is used. How many litres are left?
2. 2.A water tank holds 800 litres. 10% of the water is used. How many litres are left?
3. 3.The price of a school bag changes from ₹220 to ₹132. By what percent did it come down?
4. 4.A water tank holds 1760 litres. 20% of the water is used. How many litres are left?
5. 5.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
6. 6.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
7. 7.The price of a school bag changes from ₹120 to ₹102. By what percent did it come down?
8. 8.The price of a bicycle is ₹920. It goes up by 25%. What is the new price (in ₹)?
9. 9.The price of a school bag changes from ₹640 to ₹384. By what percent did it come down?
10. 10.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
11. 11.The price of a school bag changes from ₹1480 to ₹1850. By what percent did it go up?
12. 12.The price of a bicycle is ₹4980. It goes up by 30%. What is the new price (in ₹)?
13. 13.A shop sells 2160 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
14. 14.A town has 2760 people. Its population grows by 15%. How many people live there now?
15. 15.A water tank holds 1240 litres. 10% of the water is used. How many litres are left?
16. 16.A water tank holds 2240 litres. 25% of the water is used. How many litres are left?
17. 17.A shop sells 1420 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
18. 18.A shop sells 3340 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
19. 19.The price of a school bag changes from ₹2480 to ₹2728. By what percent did it go up?
20. 20.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
21. 21.The price of a school bag changes from ₹4820 to ₹3374. By what percent did it come down?
22. 22.The price of a school bag changes from ₹560 to ₹644. By what percent did it go up?
23. 23.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
24. 24.A water tank holds 760 litres. 5% of the water is used. How many litres are left?
25. 25.The price of a school bag changes from ₹3620 to ₹2534. By what percent did it come down?
26. 26.A price comes down by 10% and then comes down by 20% more. By what percent has it come down in all? =
27. 27.The price of a school bag changes from ₹2640 to ₹3300. By what percent did it go up?
28. 28.A shop sells 2060 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
29. 29.The price of a school bag changes from ₹3440 to ₹3784. By what percent did it go up?
30. 30.The price of a bicycle is ₹2620. It goes up by 5%. What is the new price (in ₹)?
31. 31.A water tank holds 4380 litres. 10% of the water is used. How many litres are left?
32. 32.A water tank holds 1640 litres. 15% of the water is used. How many litres are left?
33. 33.The price of a school bag changes from ₹320 to ₹448. By what percent did it go up?
34. 34.A price comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
35. 35.The price of a bicycle is ₹300. It goes up by 25%. What is the new price (in ₹)?
36. 36.A water tank holds 2760 litres. 15% of the water is used. How many litres are left?
37. 37.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
38. 38.The price of a school bag changes from ₹960 to ₹576. By what percent did it come down?
39. 39.A water tank holds 2180 litres. 40% of the water is used. How many litres are left?
40. 40.A town has 2400 people. Its population grows by 20%. How many people live there now?

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