Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 908 · 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 80 litres. 30% of the water is used. How many litres are left?
2. 2.The price of a bicycle is ₹1240. It goes up by 25%. What is the new price (in ₹)?
3. 3.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
4. 4.The price of a bicycle is ₹1200. It goes up by 5%. What is the new price (in ₹)?
5. 5.A shop sells 3120 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
6. 6.A water tank holds 2880 litres. 50% of the water is used. How many litres are left?
7. 7.The price of a school bag changes from ₹780 to ₹819. By what percent did it go up?
8. 8.A water tank holds 3060 litres. 20% of the water is used. How many litres are left?
9. 9.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
10. 10.A water tank holds 4560 litres. 5% of the water is used. How many litres are left?
11. 11.The price of a bicycle is ₹4640. It goes up by 50%. What is the new price (in ₹)?
12. 12.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
13. 13.A water tank holds 700 litres. 50% of the water is used. How many litres are left?
14. 14.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
15. 15.A town has 4440 people. Its population grows by 25%. How many people live there now?
16. 16.A shop sells 2840 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
17. 17.A town has 400 people. Its population grows by 5%. How many people live there now?
18. 18.A price comes down by 10% and then comes down by 40% more. By what percent has it come down in all? =
19. 19.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
20. 20.The price of a school bag changes from ₹4060 to ₹6090. By what percent did it go up?
21. 21.A water tank holds 260 litres. 30% of the water is used. How many litres are left?
22. 22.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
23. 23.A town has 1020 people. Its population grows by 40%. How many people live there now?
24. 24.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
25. 25.A water tank holds 340 litres. 25% of the water is used. How many litres are left?
26. 26.A shop sells 820 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
27. 27.A shop sells 1260 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
28. 28.The price of a school bag changes from ₹3840 to ₹4032. By what percent did it go up?
29. 29.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
30. 30.A water tank holds 340 litres. 20% of the water is used. How many litres are left?
31. 31.The price of a school bag changes from ₹580 to ₹609. By what percent did it go up?
32. 32.A town has 1600 people. Its population grows by 40%. How many people live there now?
33. 33.The price of a bicycle is ₹4980. It goes up by 30%. What is the new price (in ₹)?
34. 34.A shop sells 400 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
35. 35.A water tank holds 3340 litres. 25% of the water is used. How many litres are left?
36. 36.A water tank holds 2500 litres. 25% of the water is used. How many litres are left?
37. 37.The price of a school bag changes from ₹440 to ₹528. By what percent did it go up?
38. 38.A shop sells 880 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
39. 39.The price of a school bag changes from ₹320 to ₹352. By what percent did it go up?
40. 40.A price comes down by 20% and then comes down by 30% more. By what percent has it come down in all? =

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