Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 106 · 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 shop sells 540 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
2. 2.The price of a school bag changes from ₹3020 to ₹3171. By what percent did it go up?
3. 3.A price goes up by 30% and then goes up by 25% more. By what percent has it gone up in all? =
4. 4.A town has 340 people. Its population grows by 20%. How many people live there now?
5. 5.A shop sells 4840 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
6. 6.The price of a school bag changes from ₹580 to ₹812. By what percent did it go up?
7. 7.The price of a school bag changes from ₹460 to ₹552. By what percent did it go up?
8. 8.The price of a bicycle is ₹4460. It goes up by 40%. What is the new price (in ₹)?
9. 9.A price goes up by 25% and then goes up by 50% more. By what percent has it gone up in all? =
10. 10.A water tank holds 2180 litres. 25% of the water is used. How many litres are left?
11. 11.A shop sells 3620 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
12. 12.A shop sells 3580 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
13. 13.A price goes up by 30% and then goes up by 10% more. By what percent has it gone up in all? =
14. 14.A water tank holds 2000 litres. 15% of the water is used. How many litres are left?
15. 15.A shop sells 4940 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
16. 16.The price of a bicycle is ₹4860. It goes up by 10%. What is the new price (in ₹)?
17. 17.A price goes up by 40% and then comes down by 10%. By what percent has it gone up in all? =
18. 18.A price goes up by 40% and then goes up by 50% more. By what percent has it gone up in all? =
19. 19.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
20. 20.A water tank holds 2740 litres. 30% of the water is used. How many litres are left?
21. 21.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
22. 22.A price comes down by 40% and then comes down by 10% more. By what percent has it come down in all? =
23. 23.The price of a school bag changes from ₹200 to ₹230. By what percent did it go up?
24. 24.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
25. 25.A water tank holds 2840 litres. 20% of the water is used. How many litres are left?
26. 26.A town has 2420 people. Its population grows by 25%. How many people live there now?
27. 27.A price goes up by 20% and then comes down by 5%. By what percent has it gone up in all? =
28. 28.A water tank holds 1540 litres. 20% of the water is used. How many litres are left?
29. 29.A shop sells 980 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
30. 30.A price comes down by 15% and then comes down by 20% more. By what percent has it come down in all? =
31. 31.A water tank holds 4200 litres. 10% of the water is used. How many litres are left?
32. 32.A water tank holds 560 litres. 50% of the water is used. How many litres are left?
33. 33.The price of a school bag changes from ₹3260 to ₹2445. By what percent did it come down?
34. 34.The price of a school bag changes from ₹4220 to ₹3165. By what percent did it come down?
35. 35.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
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 10% and then goes up by 25% more. By what percent has it gone up in all? =
38. 38.A shop sells 3420 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
39. 39.The price of a bicycle is ₹540. It goes up by 15%. What is the new price (in ₹)?
40. 40.A price goes up by 50% and then goes up by 10% more. By what percent has it gone up in all? =

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