Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 316 · 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 1380 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
2. 2.The price of a school bag changes from ₹3800 to ₹4180. By what percent did it go up?
3. 3.The price of a school bag changes from ₹120 to ₹126. By what percent did it go up?
4. 4.The price of a school bag changes from ₹1160 to ₹1276. By what percent did it go up?
5. 5.A water tank holds 220 litres. 20% of the water is used. How many litres are left?
6. 6.A water tank holds 2100 litres. 5% of the water is used. How many litres are left?
7. 7.A shop sells 1800 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
8. 8.A water tank holds 3860 litres. 5% of the water is used. How many litres are left?
9. 9.A water tank holds 3360 litres. 25% of the water is used. How many litres are left?
10. 10.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
11. 11.A water tank holds 2480 litres. 10% of the water is used. How many litres are left?
12. 12.A water tank holds 2700 litres. 25% of the water is used. How many litres are left?
13. 13.A shop sells 4660 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
14. 14.A town has 200 people. Its population grows by 5%. How many people live there now?
15. 15.The price of a bicycle is ₹1000. It goes up by 5%. What is the new price (in ₹)?
16. 16.A shop sells 1420 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
17. 17.A water tank holds 2440 litres. 10% of the water is used. How many litres are left?
18. 18.A shop sells 1860 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
19. 19.The price of a bicycle is ₹4160. It goes up by 10%. What is the new price (in ₹)?
20. 20.The price of a school bag changes from ₹1100 to ₹770. By what percent did it come down?
21. 21.A price goes up by 30% and then goes up by 50% more. By what percent has it gone up in all? =
22. 22.A water tank holds 2900 litres. 40% of the water is used. How many litres are left?
23. 23.A town has 4480 people. Its population grows by 40%. How many people live there now?
24. 24.The price of a school bag changes from ₹1400 to ₹1610. By what percent did it go up?
25. 25.The price of a bicycle is ₹4320. It goes up by 30%. What is the new price (in ₹)?
26. 26.The price of a school bag changes from ₹1900 to ₹950. By what percent did it come down?
27. 27.The price of a bicycle is ₹60. It goes up by 10%. What is the new price (in ₹)?
28. 28.The price of a school bag changes from ₹3240 to ₹4212. By what percent did it go up?
29. 29.A water tank holds 1780 litres. 30% of the water is used. How many litres are left?
30. 30.A price goes up by 10% and then goes up by 40% more. By what percent has it gone up in all? =
31. 31.The price of a school bag changes from ₹2120 to ₹2544. By what percent did it go up?
32. 32.A price comes down by 10% and then comes down by 10% more. By what percent has it come down in all? =
33. 33.A town has 2720 people. Its population grows by 20%. How many people live there now?
34. 34.The price of a bicycle is ₹500. It goes up by 10%. What is the new price (in ₹)?
35. 35.A water tank holds 4580 litres. 25% of the water is used. How many litres are left?
36. 36.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
37. 37.The price of a school bag changes from ₹1140 to ₹1482. By what percent did it go up?
38. 38.A shop sells 2480 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 ₹4160. It goes up by 15%. What is the new price (in ₹)?
40. 40.The price of a school bag changes from ₹2900 to ₹3190. By what percent did it go up?

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