Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 653 · 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 ₹1500. It goes up by 25%. What is the new price (in ₹)?
2. 2.A water tank holds 180 litres. 30% of the water is used. How many litres are left?
3. 3.The price of a bicycle is ₹2500. It goes up by 20%. What is the new price (in ₹)?
4. 4.The price of a bicycle is ₹840. It goes up by 40%. What is the new price (in ₹)?
5. 5.A town has 1160 people. Its population grows by 30%. How many people live there now?
6. 6.The price of a school bag changes from ₹2000 to ₹2200. By what percent did it go up?
7. 7.A town has 4840 people. Its population grows by 5%. How many people live there now?
8. 8.A water tank holds 3120 litres. 10% of the water is used. How many litres are left?
9. 9.A water tank holds 2020 litres. 25% of the water is used. How many litres are left?
10. 10.A town has 2000 people. Its population grows by 5%. How many people live there now?
11. 11.A town has 3620 people. Its population grows by 5%. How many people live there now?
12. 12.A price goes up by 40% and then goes up by 40% more. By what percent has it gone up in all? =
13. 13.A water tank holds 1860 litres. 15% of the water is used. How many litres are left?
14. 14.The price of a bicycle is ₹2760. It goes up by 25%. What is the new price (in ₹)?
15. 15.A water tank holds 2180 litres. 40% of the water is used. How many litres are left?
16. 16.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
17. 17.The price of a school bag changes from ₹2260 to ₹2147. By what percent did it come down?
18. 18.The price of a bicycle is ₹1440. It goes up by 5%. What is the new price (in ₹)?
19. 19.A price goes up by 25% and then goes up by 30% more. By what percent has it gone up in all? =
20. 20.The price of a school bag changes from ₹3140 to ₹3611. By what percent did it go up?
21. 21.A water tank holds 3440 litres. 30% of the water is used. How many litres are left?
22. 22.The price of a school bag changes from ₹920 to ₹736. By what percent did it come down?
23. 23.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
24. 24.A shop sells 2320 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
25. 25.A water tank holds 2020 litres. 40% of the water is used. How many litres are left?
26. 26.A water tank holds 2080 litres. 20% of the water is used. How many litres are left?
27. 27.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
28. 28.A water tank holds 1700 litres. 20% of the water is used. How many litres are left?
29. 29.A price comes down by 25% and then comes down by 20% more. By what percent has it come down in all? =
30. 30.The price of a school bag changes from ₹2920 to ₹3358. By what percent did it go up?
31. 31.The price of a school bag changes from ₹520 to ₹390. By what percent did it come down?
32. 32.A price comes down by 15% and then comes down by 30% more. By what percent has it come down in all? =
33. 33.A town has 2480 people. Its population grows by 15%. How many people live there now?
34. 34.The price of a school bag changes from ₹2100 to ₹1470. By what percent did it come down?
35. 35.The price of a bicycle is ₹1460. It goes up by 15%. What is the new price (in ₹)?
36. 36.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
37. 37.A price goes up by 50% and then comes down by 20%. By what percent has it gone up in all? =
38. 38.A price goes up by 10% and then goes up by 25% more. By what percent has it gone up in all? =
39. 39.A town has 200 people. Its population grows by 50%. How many people live there now?
40. 40.A shop sells 920 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?

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