Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 174 · 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 ₹4820. It goes up by 40%. What is the new price (in ₹)?
2. 2.A water tank holds 4660 litres. 30% of the water is used. How many litres are left?
3. 3.A town has 1480 people. Its population grows by 30%. How many people live there now?
4. 4.A town has 280 people. Its population grows by 15%. How many people live there now?
5. 5.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
6. 6.The price of a bicycle is ₹4780. It goes up by 20%. What is the new price (in ₹)?
7. 7.A price goes up by 25% and then goes up by 40% more. By what percent has it gone up in all? =
8. 8.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
9. 9.A shop sells 1460 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
10. 10.A shop sells 1440 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
11. 11.The price of a school bag changes from ₹2720 to ₹4080. By what percent did it go up?
12. 12.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
13. 13.The price of a school bag changes from ₹1820 to ₹1911. By what percent did it go up?
14. 14.A water tank holds 4960 litres. 10% of the water is used. How many litres are left?
15. 15.A town has 4220 people. Its population grows by 5%. How many people live there now?
16. 16.A water tank holds 1460 litres. 5% of the water is used. How many litres are left?
17. 17.The price of a school bag changes from ₹4900 to ₹3430. By what percent did it come down?
18. 18.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
19. 19.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
20. 20.A water tank holds 1380 litres. 20% of the water is used. How many litres are left?
21. 21.A water tank holds 1080 litres. 15% of the water is used. How many litres are left?
22. 22.The price of a school bag changes from ₹320 to ₹384. By what percent did it go up?
23. 23.The price of a bicycle is ₹1340. It goes up by 25%. What is the new price (in ₹)?
24. 24.The price of a bicycle is ₹1960. It goes up by 25%. What is the new price (in ₹)?
25. 25.The price of a school bag changes from ₹1720 to ₹1290. By what percent did it come down?
26. 26.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
27. 27.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
28. 28.The price of a school bag changes from ₹940 to ₹1128. By what percent did it go up?
29. 29.The price of a school bag changes from ₹640 to ₹448. By what percent did it come down?
30. 30.A town has 2880 people. Its population grows by 25%. How many people live there now?
31. 31.A water tank holds 1760 litres. 30% of the water is used. How many litres are left?
32. 32.A town has 4080 people. Its population grows by 25%. How many people live there now?
33. 33.A water tank holds 3120 litres. 30% of the water is used. How many litres are left?
34. 34.The price of a school bag changes from ₹540 to ₹324. By what percent did it come down?
35. 35.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
36. 36.The price of a bicycle is ₹2700. It goes up by 15%. What is the new price (in ₹)?
37. 37.The price of a school bag changes from ₹3680 to ₹4600. By what percent did it go up?
38. 38.The price of a school bag changes from ₹4160 to ₹4576. By what percent did it go up?
39. 39.The price of a bicycle is ₹2720. It goes up by 15%. What is the new price (in ₹)?
40. 40.A water tank holds 1900 litres. 5% of the water is used. How many litres are left?

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