Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 457 · 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 30% and then goes up by 5% more. By what percent has it gone up in all? =
2. 2.The price of a bicycle is ₹4420. It goes up by 15%. What is the new price (in ₹)?
3. 3.The price of a school bag changes from ₹3940 to ₹3152. By what percent did it come down?
4. 4.A water tank holds 620 litres. 40% of the water is used. How many litres are left?
5. 5.A price goes up by 20% and then goes up by 5% more. By what percent has it gone up in all? =
6. 6.The price of a school bag changes from ₹4000 to ₹4800. By what percent did it go up?
7. 7.A price comes down by 20% and then comes down by 40% more. By what percent has it come down in all? =
8. 8.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
9. 9.A shop sells 1440 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
10. 10.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
11. 11.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
12. 12.A water tank holds 3060 litres. 5% of the water is used. How many litres are left?
13. 13.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
14. 14.A price goes up by 5% and then goes up by 25% more. By what percent has it gone up in all? =
15. 15.A shop sells 3320 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
16. 16.A price goes up by 25% and then goes up by 15% more. By what percent has it gone up in all? =
17. 17.A water tank holds 160 litres. 25% of the water is used. How many litres are left?
18. 18.The price of a bicycle is ₹760. It goes up by 15%. What is the new price (in ₹)?
19. 19.The price of a school bag changes from ₹2540 to ₹2286. By what percent did it come down?
20. 20.The price of a school bag changes from ₹1420 to ₹2130. By what percent did it go up?
21. 21.A water tank holds 4220 litres. 30% of the water is used. How many litres are left?
22. 22.The price of a school bag changes from ₹4260 to ₹4047. By what percent did it come down?
23. 23.A town has 320 people. Its population grows by 10%. How many people live there now?
24. 24.A water tank holds 2700 litres. 25% of the water is used. How many litres are left?
25. 25.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
26. 26.A price comes down by 10% and then comes down by 15% more. By what percent has it come down in all? =
27. 27.The price of a bicycle is ₹1960. It goes up by 50%. What is the new price (in ₹)?
28. 28.A shop sells 480 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
29. 29.A price comes down by 20% and then comes down by 20% more. By what percent has it come down in all? =
30. 30.A water tank holds 960 litres. 30% of the water is used. How many litres are left?
31. 31.A water tank holds 3620 litres. 10% of the water is used. How many litres are left?
32. 32.A water tank holds 800 litres. 30% of the water is used. How many litres are left?
33. 33.A water tank holds 1740 litres. 40% of the water is used. How many litres are left?
34. 34.The price of a bicycle is ₹180. It goes up by 40%. What is the new price (in ₹)?
35. 35.A shop sells 4700 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
36. 36.A water tank holds 4920 litres. 10% of the water is used. How many litres are left?
37. 37.The price of a school bag changes from ₹4380 to ₹3942. By what percent did it come down?
38. 38.A price comes down by 50% and then comes down by 25% more. By what percent has it come down in all? =
39. 39.A shop sells 4860 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
40. 40.A town has 620 people. Its population grows by 50%. How many people live there now?

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