Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 712 · 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 water tank holds 2700 litres. 25% of the water is used. How many litres are left?
2. 2.The price of a school bag changes from ₹2440 to ₹3172. By what percent did it go up?
3. 3.A water tank holds 2240 litres. 10% of the water is used. How many litres are left?
4. 4.A town has 1380 people. Its population grows by 25%. How many people live there now?
5. 5.The price of a school bag changes from ₹3060 to ₹2295. By what percent did it come down?
6. 6.A shop sells 2100 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
7. 7.A shop sells 2620 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
8. 8.A water tank holds 2140 litres. 5% of the water is used. How many litres are left?
9. 9.A water tank holds 4520 litres. 25% of the water is used. How many litres are left?
10. 10.A town has 2280 people. Its population grows by 15%. How many people live there now?
11. 11.The price of a school bag changes from ₹1460 to ₹876. By what percent did it come down?
12. 12.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
13. 13.The price of a bicycle is ₹4800. It goes up by 40%. What is the new price (in ₹)?
14. 14.A water tank holds 2480 litres. 5% of the water is used. How many litres are left?
15. 15.A water tank holds 2680 litres. 25% of the water is used. How many litres are left?
16. 16.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
17. 17.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
18. 18.The price of a school bag changes from ₹4520 to ₹3616. By what percent did it come down?
19. 19.The price of a bicycle is ₹2720. It goes up by 40%. What is the new price (in ₹)?
20. 20.A town has 3860 people. Its population grows by 50%. How many people live there now?
21. 21.A shop sells 4280 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
22. 22.A price goes up by 10% and then goes up by 30% more. By what percent has it gone up in all? =
23. 23.The price of a bicycle is ₹2460. It goes up by 30%. What is the new price (in ₹)?
24. 24.A shop sells 400 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
25. 25.A price comes down by 50% and then comes down by 20% more. By what percent has it come down in all? =
26. 26.A shop sells 3680 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
27. 27.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
28. 28.The price of a school bag changes from ₹960 to ₹1056. By what percent did it go up?
29. 29.The price of a school bag changes from ₹4900 to ₹3675. By what percent did it come down?
30. 30.A water tank holds 2980 litres. 10% of the water is used. How many litres are left?
31. 31.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
32. 32.A water tank holds 820 litres. 5% of the water is used. How many litres are left?
33. 33.A water tank holds 4180 litres. 50% of the water is used. How many litres are left?
34. 34.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
35. 35.A shop sells 3220 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
36. 36.A water tank holds 3600 litres. 25% of the water is used. How many litres are left?
37. 37.A water tank holds 3220 litres. 25% of the water is used. How many litres are left?
38. 38.The price of a bicycle is ₹1620. It goes up by 5%. What is the new price (in ₹)?
39. 39.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
40. 40.A water tank holds 2960 litres. 10% of the water is used. How many litres are left?

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