Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 975 · 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 5% and then comes down by 10% more. By what percent has it come down in all? =
2. 2.A water tank holds 2740 litres. 10% of the water is used. How many litres are left?
3. 3.The price of a school bag changes from ₹3900 to ₹2925. By what percent did it come down?
4. 4.A water tank holds 3400 litres. 20% of the water is used. How many litres are left?
5. 5.A water tank holds 300 litres. 10% of the water is used. How many litres are left?
6. 6.A price goes up by 10% and then goes up by 15% more. By what percent has it gone up in all? =
7. 7.A town has 4500 people. Its population grows by 40%. How many people live there now?
8. 8.A price goes up by 50% and then comes down by 10%. By what percent has it gone up in all? =
9. 9.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
10. 10.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
11. 11.A town has 3720 people. Its population grows by 50%. How many people live there now?
12. 12.The price of a school bag changes from ₹960 to ₹576. By what percent did it come down?
13. 13.The price of a school bag changes from ₹4740 to ₹2370. By what percent did it come down?
14. 14.The price of a school bag changes from ₹2940 to ₹3528. By what percent did it go up?
15. 15.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
16. 16.The price of a bicycle is ₹2400. It goes up by 40%. What is the new price (in ₹)?
17. 17.A shop sells 3080 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
18. 18.The price of a school bag changes from ₹2600 to ₹3120. By what percent did it go up?
19. 19.A shop sells 1900 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
20. 20.The price of a school bag changes from ₹4640 to ₹5568. By what percent did it go up?
21. 21.A town has 1000 people. Its population grows by 15%. How many people live there now?
22. 22.A price comes down by 30% and then comes down by 25% more. By what percent has it come down in all? =
23. 23.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
24. 24.A town has 4240 people. Its population grows by 20%. How many people live there now?
25. 25.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
26. 26.A water tank holds 2180 litres. 10% of the water is used. How many litres are left?
27. 27.A water tank holds 2320 litres. 30% of the water is used. How many litres are left?
28. 28.A shop sells 1800 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
29. 29.The price of a school bag changes from ₹2180 to ₹1962. By what percent did it come down?
30. 30.A water tank holds 4180 litres. 5% of the water is used. How many litres are left?
31. 31.The price of a school bag changes from ₹3920 to ₹4508. By what percent did it go up?
32. 32.The price of a bicycle is ₹4400. It goes up by 15%. What is the new price (in ₹)?
33. 33.A water tank holds 1080 litres. 25% of the water is used. How many litres are left?
34. 34.A shop sells 2340 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
35. 35.A water tank holds 3240 litres. 5% of the water is used. How many litres are left?
36. 36.The price of a school bag changes from ₹2040 to ₹1632. By what percent did it come down?
37. 37.A water tank holds 2200 litres. 5% of the water is used. How many litres are left?
38. 38.A water tank holds 820 litres. 40% of the water is used. How many litres are left?
39. 39.A shop sells 1120 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
40. 40.The price of a bicycle is ₹3780. It goes up by 40%. What is the new price (in ₹)?

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