Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 93 · 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 50% and then goes up by 20% more. By what percent has it gone up in all? =
2. 2.The price of a bicycle is ₹2080. It goes up by 20%. What is the new price (in ₹)?
3. 3.A water tank holds 1220 litres. 30% of the water is used. How many litres are left?
4. 4.A water tank holds 2260 litres. 30% of the water is used. How many litres are left?
5. 5.The price of a school bag changes from ₹200 to ₹160. By what percent did it come down?
6. 6.The price of a bicycle is ₹640. It goes up by 25%. What is the new price (in ₹)?
7. 7.A town has 1100 people. Its population grows by 25%. How many people live there now?
8. 8.The price of a school bag changes from ₹3880 to ₹5044. By what percent did it go up?
9. 9.A water tank holds 3800 litres. 5% of the water is used. How many litres are left?
10. 10.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
11. 11.A shop sells 1080 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
12. 12.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
13. 13.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
14. 14.A water tank holds 1680 litres. 15% of the water is used. How many litres are left?
15. 15.The price of a school bag changes from ₹1240 to ₹1116. By what percent did it come down?
16. 16.A water tank holds 1000 litres. 15% of the water is used. How many litres are left?
17. 17.A water tank holds 3280 litres. 5% of the water is used. How many litres are left?
18. 18.A water tank holds 1920 litres. 10% of the water is used. How many litres are left?
19. 19.A town has 4380 people. Its population grows by 40%. How many people live there now?
20. 20.A water tank holds 3660 litres. 15% of the water is used. How many litres are left?
21. 21.The price of a school bag changes from ₹4560 to ₹2736. By what percent did it come down?
22. 22.A price comes down by 30% and then comes down by 15% more. By what percent has it come down in all? =
23. 23.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
24. 24.A town has 1120 people. Its population grows by 30%. How many people live there now?
25. 25.A town has 2540 people. Its population grows by 5%. How many people live there now?
26. 26.A water tank holds 2640 litres. 15% of the water is used. How many litres are left?
27. 27.The price of a school bag changes from ₹4740 to ₹5925. By what percent did it go up?
28. 28.A town has 4060 people. Its population grows by 5%. How many people live there now?
29. 29.The price of a bicycle is ₹3040. It goes up by 10%. What is the new price (in ₹)?
30. 30.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
31. 31.The price of a bicycle is ₹2560. It goes up by 30%. What is the new price (in ₹)?
32. 32.A town has 4100 people. Its population grows by 5%. How many people live there now?
33. 33.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
34. 34.The price of a school bag changes from ₹1420 to ₹1349. By what percent did it come down?
35. 35.A water tank holds 3480 litres. 50% of the water is used. How many litres are left?
36. 36.A water tank holds 2100 litres. 15% of the water is used. How many litres are left?
37. 37.A shop sells 3900 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
38. 38.A price goes up by 5% and then goes up by 50% more. By what percent has it gone up in all? =
39. 39.A price comes down by 5% and then comes down by 50% more. By what percent has it come down in all? =
40. 40.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =

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