Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 469 · 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 4060 litres. 25% of the water is used. How many litres are left?
2. 2.The price of a school bag changes from ₹3480 to ₹3828. By what percent did it go up?
3. 3.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
4. 4.The price of a school bag changes from ₹4860 to ₹4131. By what percent did it come down?
5. 5.The price of a school bag changes from ₹400 to ₹240. By what percent did it come down?
6. 6.The price of a school bag changes from ₹1340 to ₹1072. By what percent did it come down?
7. 7.The price of a bicycle is ₹1420. It goes up by 20%. What is the new price (in ₹)?
8. 8.A price comes down by 20% and then comes down by 15% more. By what percent has it come down in all? =
9. 9.A water tank holds 2160 litres. 20% of the water is used. How many litres are left?
10. 10.The price of a school bag changes from ₹160 to ₹144. By what percent did it come down?
11. 11.A water tank holds 640 litres. 40% of the water is used. How many litres are left?
12. 12.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
13. 13.A town has 1420 people. Its population grows by 30%. How many people live there now?
14. 14.A water tank holds 1320 litres. 5% of the water is used. How many litres are left?
15. 15.A shop sells 2300 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
16. 16.A shop sells 1460 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
17. 17.The price of a school bag changes from ₹2920 to ₹3796. By what percent did it go up?
18. 18.A water tank holds 3740 litres. 10% of the water is used. How many litres are left?
19. 19.A town has 1440 people. Its population grows by 25%. How many people live there now?
20. 20.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
21. 21.A shop sells 2640 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
22. 22.The price of a bicycle is ₹3560. It goes up by 40%. What is the new price (in ₹)?
23. 23.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
24. 24.The price of a school bag changes from ₹1880 to ₹1974. By what percent did it go up?
25. 25.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
26. 26.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
27. 27.A water tank holds 3980 litres. 15% of the water is used. How many litres are left?
28. 28.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
29. 29.The price of a bicycle is ₹940. It goes up by 10%. What is the new price (in ₹)?
30. 30.A shop sells 4160 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
31. 31.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
32. 32.A water tank holds 3640 litres. 15% of the water is used. How many litres are left?
33. 33.The price of a school bag changes from ₹340 to ₹374. By what percent did it go up?
34. 34.The price of a bicycle is ₹860. It goes up by 50%. What is the new price (in ₹)?
35. 35.The price of a bicycle is ₹3580. It goes up by 40%. What is the new price (in ₹)?
36. 36.The price of a bicycle is ₹120. It goes up by 40%. What is the new price (in ₹)?
37. 37.The price of a school bag changes from ₹1960 to ₹1764. By what percent did it come down?
38. 38.A water tank holds 1260 litres. 30% of the water is used. How many litres are left?
39. 39.A water tank holds 4000 litres. 5% of the water is used. How many litres are left?
40. 40.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =

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