Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 652 · 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 comes down by 10% and then comes down by 5% more. By what percent has it come down in all? =
2. 2.The price of a bicycle is ₹3360. It goes up by 50%. What is the new price (in ₹)?
3. 3.The price of a bicycle is ₹2300. It goes up by 15%. What is the new price (in ₹)?
4. 4.A water tank holds 4140 litres. 50% of the water is used. How many litres are left?
5. 5.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =
6. 6.The price of a school bag changes from ₹280 to ₹322. By what percent did it go up?
7. 7.The price of a bicycle is ₹260. It goes up by 50%. What is the new price (in ₹)?
8. 8.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
9. 9.A town has 2900 people. Its population grows by 10%. How many people live there now?
10. 10.A water tank holds 3400 litres. 5% of the water is used. How many litres are left?
11. 11.A water tank holds 4480 litres. 50% of the water is used. How many litres are left?
12. 12.The price of a bicycle is ₹4700. It goes up by 25%. What is the new price (in ₹)?
13. 13.The price of a school bag changes from ₹2320 to ₹2088. By what percent did it come down?
14. 14.The price of a school bag changes from ₹2340 to ₹1404. By what percent did it come down?
15. 15.A shop sells 3500 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
16. 16.The price of a bicycle is ₹1080. It goes up by 30%. What is the new price (in ₹)?
17. 17.The price of a bicycle is ₹3840. It goes up by 50%. What is the new price (in ₹)?
18. 18.The price of a school bag changes from ₹4520 to ₹6780. By what percent did it go up?
19. 19.The price of a bicycle is ₹280. It goes up by 10%. What is the new price (in ₹)?
20. 20.The price of a bicycle is ₹1560. It goes up by 25%. What is the new price (in ₹)?
21. 21.The price of a bicycle is ₹2560. It goes up by 30%. What is the new price (in ₹)?
22. 22.The price of a school bag changes from ₹460 to ₹414. By what percent did it come down?
23. 23.A water tank holds 1480 litres. 5% of the water is used. How many litres are left?
24. 24.A town has 3660 people. Its population grows by 5%. How many people live there now?
25. 25.A water tank holds 520 litres. 30% of the water is used. How many litres are left?
26. 26.A water tank holds 3380 litres. 25% of the water is used. How many litres are left?
27. 27.A water tank holds 1140 litres. 25% of the water is used. How many litres are left?
28. 28.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
29. 29.The price of a school bag changes from ₹2420 to ₹2178. By what percent did it come down?
30. 30.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
31. 31.A water tank holds 2920 litres. 10% of the water is used. How many litres are left?
32. 32.A town has 220 people. Its population grows by 40%. How many people live there now?
33. 33.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
34. 34.The price of a school bag changes from ₹380 to ₹456. By what percent did it go up?
35. 35.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
36. 36.A town has 2100 people. Its population grows by 20%. How many people live there now?
37. 37.A water tank holds 1340 litres. 15% of the water is used. How many litres are left?
38. 38.A water tank holds 3860 litres. 40% of the water is used. How many litres are left?
39. 39.A water tank holds 2280 litres. 10% of the water is used. How many litres are left?
40. 40.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =

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