Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 880 · 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 price goes up by 40% and then goes up by 25% more. By what percent has it gone up in all? =
2. 2.A shop sells 1740 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
3. 3.A water tank holds 4500 litres. 5% of the water is used. How many litres are left?
4. 4.A water tank holds 200 litres. 15% of the water is used. How many litres are left?
5. 5.A shop sells 620 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
6. 6.A price comes down by 5% and then comes down by 15% more. By what percent has it come down in all? =
7. 7.A town has 4180 people. Its population grows by 40%. How many people live there now?
8. 8.The price of a school bag changes from ₹4160 to ₹2912. By what percent did it come down?
9. 9.The price of a bicycle is ₹1240. It goes up by 50%. What is the new price (in ₹)?
10. 10.A water tank holds 3460 litres. 15% of the water is used. How many litres are left?
11. 11.A water tank holds 380 litres. 20% of the water is used. How many litres are left?
12. 12.A water tank holds 260 litres. 50% of the water is used. How many litres are left?
13. 13.The price of a school bag changes from ₹4520 to ₹4746. By what percent did it go up?
14. 14.A price goes up by 20% and then comes down by 15%. By what percent has it gone up in all? =
15. 15.The price of a school bag changes from ₹1180 to ₹708. By what percent did it come down?
16. 16.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
17. 17.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
18. 18.The price of a bicycle is ₹660. It goes up by 10%. What is the new price (in ₹)?
19. 19.A price comes down by 40% and then comes down by 15% more. By what percent has it come down in all? =
20. 20.A water tank holds 1720 litres. 15% of the water is used. How many litres are left?
21. 21.A town has 2920 people. Its population grows by 10%. How many people live there now?
22. 22.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
23. 23.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
24. 24.A water tank holds 2760 litres. 30% of the water is used. How many litres are left?
25. 25.The price of a school bag changes from ₹5000 to ₹4250. By what percent did it come down?
26. 26.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
27. 27.A water tank holds 1280 litres. 30% of the water is used. How many litres are left?
28. 28.A shop sells 3200 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
29. 29.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
30. 30.A price comes down by 20% and then comes down by 10% more. By what percent has it come down in all? =
31. 31.A shop sells 660 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
32. 32.The price of a school bag changes from ₹1180 to ₹1652. By what percent did it go up?
33. 33.The price of a school bag changes from ₹4260 to ₹3834. By what percent did it come down?
34. 34.A water tank holds 3200 litres. 25% of the water is used. How many litres are left?
35. 35.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
36. 36.The price of a bicycle is ₹4120. It goes up by 30%. What is the new price (in ₹)?
37. 37.The price of a school bag changes from ₹2820 to ₹3243. By what percent did it go up?
38. 38.The price of a bicycle is ₹3480. It goes up by 50%. What is the new price (in ₹)?
39. 39.A water tank holds 3060 litres. 20% of the water is used. How many litres are left?
40. 40.The price of a bicycle is ₹1260. It goes up by 20%. What is the new price (in ₹)?

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