Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 546 · 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 4260 litres. 40% of the water is used. How many litres are left?
2. 2.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
3. 3.A water tank holds 3760 litres. 25% of the water is used. How many litres are left?
4. 4.A shop sells 1560 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
5. 5.The price of a bicycle is ₹4080. It goes up by 50%. What is the new price (in ₹)?
6. 6.The price of a bicycle is ₹1740. It goes up by 40%. What is the new price (in ₹)?
7. 7.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
8. 8.A price goes up by 20% and then goes up by 15% more. By what percent has it gone up in all? =
9. 9.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
10. 10.A water tank holds 1660 litres. 5% of the water is used. How many litres are left?
11. 11.A water tank holds 160 litres. 25% of the water is used. How many litres are left?
12. 12.A shop sells 3580 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
13. 13.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
14. 14.A town has 340 people. Its population grows by 30%. How many people live there now?
15. 15.The price of a bicycle is ₹880. It goes up by 10%. What is the new price (in ₹)?
16. 16.A water tank holds 540 litres. 50% of the water is used. How many litres are left?
17. 17.A water tank holds 2440 litres. 20% of the water is used. How many litres are left?
18. 18.A water tank holds 2820 litres. 15% of the water is used. How many litres are left?
19. 19.A shop sells 880 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
20. 20.A water tank holds 4620 litres. 30% of the water is used. How many litres are left?
21. 21.A shop sells 3820 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
22. 22.A shop sells 2900 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 ₹4960 to ₹4464. By what percent did it come down?
24. 24.A price goes up by 50% and then comes down by 5%. By what percent has it gone up in all? =
25. 25.The price of a school bag changes from ₹1440 to ₹1584. By what percent did it go up?
26. 26.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
27. 27.A water tank holds 3640 litres. 25% of the water is used. How many litres are left?
28. 28.A town has 960 people. Its population grows by 10%. How many people live there now?
29. 29.The price of a school bag changes from ₹680 to ₹408. By what percent did it come down?
30. 30.A shop sells 1440 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
31. 31.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
32. 32.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
33. 33.The price of a school bag changes from ₹3600 to ₹4500. By what percent did it go up?
34. 34.A price goes up by 50% and then goes up by 25% more. By what percent has it gone up in all? =
35. 35.The price of a school bag changes from ₹3200 to ₹2400. By what percent did it come down?
36. 36.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
37. 37.The price of a school bag changes from ₹3700 to ₹2220. By what percent did it come down?
38. 38.A shop sells 1020 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 bicycle is ₹3080. It goes up by 10%. What is the new price (in ₹)?
40. 40.A shop sells 2160 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?

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