Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 957 · 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.The price of a bicycle is ₹720. It goes up by 25%. What is the new price (in ₹)?
2. 2.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
3. 3.The price of a school bag changes from ₹1380 to ₹1518. By what percent did it go up?
4. 4.A town has 4420 people. Its population grows by 15%. How many people live there now?
5. 5.A water tank holds 4680 litres. 40% of the water is used. How many litres are left?
6. 6.The price of a school bag changes from ₹4060 to ₹4669. By what percent did it go up?
7. 7.A town has 60 people. Its population grows by 5%. How many people live there now?
8. 8.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
9. 9.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
10. 10.A water tank holds 320 litres. 15% of the water is used. How many litres are left?
11. 11.A water tank holds 3820 litres. 40% of the water is used. How many litres are left?
12. 12.A water tank holds 1380 litres. 5% of the water is used. How many litres are left?
13. 13.A shop sells 1600 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
14. 14.The price of a school bag changes from ₹4320 to ₹6480. By what percent did it go up?
15. 15.The price of a bicycle is ₹3780. It goes up by 25%. What is the new price (in ₹)?
16. 16.A shop sells 4620 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
17. 17.A shop sells 3800 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
18. 18.A water tank holds 4460 litres. 40% of the water is used. How many litres are left?
19. 19.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
20. 20.A water tank holds 1560 litres. 50% of the water is used. How many litres are left?
21. 21.A water tank holds 4440 litres. 15% of the water is used. How many litres are left?
22. 22.A water tank holds 3480 litres. 25% of the water is used. How many litres are left?
23. 23.The price of a school bag changes from ₹4540 to ₹2724. By what percent did it come down?
24. 24.A price comes down by 25% and then comes down by 50% more. By what percent has it come down in all? =
25. 25.A shop sells 1520 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
26. 26.A shop sells 700 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
27. 27.The price of a school bag changes from ₹340 to ₹391. By what percent did it go up?
28. 28.A shop sells 2840 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
29. 29.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
30. 30.A price goes up by 50% and then comes down by 25%. By what percent has it gone up in all? =
31. 31.The price of a bicycle is ₹700. It goes up by 5%. What is the new price (in ₹)?
32. 32.The price of a bicycle is ₹160. It goes up by 15%. What is the new price (in ₹)?
33. 33.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
34. 34.A town has 4340 people. Its population grows by 20%. How many people live there now?
35. 35.The price of a school bag changes from ₹3320 to ₹3818. By what percent did it go up?
36. 36.The price of a school bag changes from ₹1580 to ₹1975. By what percent did it go up?
37. 37.A price goes up by 25% and then comes down by 15%. By what percent has it gone up in all? =
38. 38.A water tank holds 4420 litres. 10% of the water is used. How many litres are left?
39. 39.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
40. 40.A water tank holds 3440 litres. 10% of the water is used. How many litres are left?

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