Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 657 · 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 10% and then comes down by 5%. By what percent has it gone up in all? =
2. 2.A shop sells 2520 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
3. 3.A price comes down by 40% and then comes down by 5% more. By what percent has it come down in all? =
4. 4.A town has 1560 people. Its population grows by 5%. How many people live there now?
5. 5.A water tank holds 2400 litres. 20% of the water is used. How many litres are left?
6. 6.A price goes up by 50% and then goes up by 30% more. By what percent has it gone up in all? =
7. 7.The price of a bicycle is ₹3000. It goes up by 50%. What is the new price (in ₹)?
8. 8.A water tank holds 3960 litres. 30% of the water is used. How many litres are left?
9. 9.A shop sells 2200 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
10. 10.A water tank holds 3980 litres. 10% of the water is used. How many litres are left?
11. 11.A town has 3460 people. Its population grows by 25%. How many people live there now?
12. 12.The price of a school bag changes from ₹2560 to ₹2688. By what percent did it go up?
13. 13.A water tank holds 3740 litres. 25% of the water is used. How many litres are left?
14. 14.A town has 3940 people. Its population grows by 15%. How many people live there now?
15. 15.The price of a bicycle is ₹460. It goes up by 5%. What is the new price (in ₹)?
16. 16.The price of a school bag changes from ₹2560 to ₹1792. By what percent did it come down?
17. 17.A water tank holds 1340 litres. 30% of the water is used. How many litres are left?
18. 18.A water tank holds 3420 litres. 40% of the water is used. How many litres are left?
19. 19.The price of a school bag changes from ₹4180 to ₹4389. By what percent did it go up?
20. 20.The price of a bicycle is ₹2180. It goes up by 5%. What is the new price (in ₹)?
21. 21.The price of a school bag changes from ₹1580 to ₹1185. By what percent did it come down?
22. 22.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
23. 23.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
24. 24.A town has 1060 people. Its population grows by 30%. How many people live there now?
25. 25.A water tank holds 2320 litres. 10% of the water is used. How many litres are left?
26. 26.The price of a bicycle is ₹1780. It goes up by 10%. What is the new price (in ₹)?
27. 27.A shop sells 1160 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
28. 28.A water tank holds 660 litres. 50% of the water is used. How many litres are left?
29. 29.A water tank holds 3200 litres. 15% of the water is used. How many litres are left?
30. 30.A shop sells 2220 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
31. 31.A town has 2040 people. Its population grows by 5%. How many people live there now?
32. 32.The price of a school bag changes from ₹800 to ₹400. By what percent did it come down?
33. 33.A price goes up by 15% and then comes down by 5%. By what percent has it gone up in all? =
34. 34.A water tank holds 4460 litres. 10% of the water is used. How many litres are left?
35. 35.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
36. 36.A water tank holds 280 litres. 5% of the water is used. How many litres are left?
37. 37.The price of a school bag changes from ₹3700 to ₹4625. By what percent did it go up?
38. 38.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
39. 39.A shop sells 4260 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
40. 40.A shop sells 800 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?

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