Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 790 · 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 2840 litres. 15% of the water is used. How many litres are left?
2. 2.A water tank holds 3080 litres. 5% of the water is used. How many litres are left?
3. 3.The price of a school bag changes from ₹1880 to ₹1974. By what percent did it go up?
4. 4.A shop sells 140 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
5. 5.A water tank holds 3080 litres. 20% of the water is used. How many litres are left?
6. 6.The price of a bicycle is ₹2140. It goes up by 50%. What is the new price (in ₹)?
7. 7.A shop sells 3400 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
8. 8.A water tank holds 2640 litres. 10% of the water is used. How many litres are left?
9. 9.The price of a school bag changes from ₹2180 to ₹3270. By what percent did it go up?
10. 10.The price of a bicycle is ₹2380. It goes up by 25%. What is the new price (in ₹)?
11. 11.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
12. 12.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
13. 13.The price of a bicycle is ₹2220. It goes up by 40%. What is the new price (in ₹)?
14. 14.The price of a bicycle is ₹540. It goes up by 10%. What is the new price (in ₹)?
15. 15.A shop sells 3880 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
16. 16.The price of a school bag changes from ₹2140 to ₹1498. By what percent did it come down?
17. 17.A town has 440 people. Its population grows by 10%. How many people live there now?
18. 18.A town has 380 people. Its population grows by 25%. How many people live there now?
19. 19.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
20. 20.The price of a school bag changes from ₹4500 to ₹4950. By what percent did it go up?
21. 21.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
22. 22.A shop sells 2780 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
23. 23.A town has 2180 people. Its population grows by 10%. How many people live there now?
24. 24.A water tank holds 4980 litres. 15% of the water is used. How many litres are left?
25. 25.A water tank holds 3780 litres. 10% of the water is used. How many litres are left?
26. 26.The price of a bicycle is ₹3440. It goes up by 25%. What is the new price (in ₹)?
27. 27.The price of a school bag changes from ₹3420 to ₹3762. By what percent did it go up?
28. 28.A price comes down by 25% and then comes down by 30% more. By what percent has it come down in all? =
29. 29.A water tank holds 1760 litres. 20% of the water is used. How many litres are left?
30. 30.A water tank holds 4960 litres. 10% of the water is used. How many litres are left?
31. 31.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
32. 32.A water tank holds 1900 litres. 40% of the water is used. How many litres are left?
33. 33.The price of a bicycle is ₹2940. It goes up by 20%. What is the new price (in ₹)?
34. 34.A price comes down by 20% and then comes down by 50% more. By what percent has it come down in all? =
35. 35.A price goes up by 40% and then comes down by 15%. By what percent has it gone up in all? =
36. 36.A water tank holds 1020 litres. 50% of the water is used. How many litres are left?
37. 37.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
38. 38.A price comes down by 40% and then comes down by 30% more. By what percent has it come down in all? =
39. 39.A water tank holds 4220 litres. 10% of the water is used. How many litres are left?
40. 40.A water tank holds 1040 litres. 40% of the water is used. How many litres are left?

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