Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 301 · 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 3940 litres. 30% of the water is used. How many litres are left?
2. 2.A price goes up by 40% and then comes down by 20%. By what percent has it gone up in all? =
3. 3.A water tank holds 940 litres. 40% of the water is used. How many litres are left?
4. 4.The price of a school bag changes from ₹1540 to ₹2310. By what percent did it go up?
5. 5.The price of a school bag changes from ₹1300 to ₹910. By what percent did it come down?
6. 6.A water tank holds 380 litres. 5% of the water is used. How many litres are left?
7. 7.A price comes down by 15% and then comes down by 40% more. By what percent has it come down in all? =
8. 8.A water tank holds 4360 litres. 15% of the water is used. How many litres are left?
9. 9.The price of a bicycle is ₹3180. It goes up by 25%. What is the new price (in ₹)?
10. 10.A water tank holds 2040 litres. 50% of the water is used. How many litres are left?
11. 11.A shop sells 260 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
12. 12.A water tank holds 1180 litres. 50% of the water is used. How many litres are left?
13. 13.A price goes up by 50% and then goes up by 40% more. By what percent has it gone up in all? =
14. 14.A water tank holds 860 litres. 30% of the water is used. How many litres are left?
15. 15.A shop sells 4640 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
16. 16.A water tank holds 4240 litres. 40% of the water is used. How many litres are left?
17. 17.The price of a bicycle is ₹3580. It goes up by 25%. What is the new price (in ₹)?
18. 18.The price of a school bag changes from ₹660 to ₹627. By what percent did it come down?
19. 19.A water tank holds 580 litres. 50% of the water is used. How many litres are left?
20. 20.A water tank holds 320 litres. 25% of the water is used. How many litres are left?
21. 21.A water tank holds 1200 litres. 40% of the water is used. How many litres are left?
22. 22.The price of a school bag changes from ₹360 to ₹324. By what percent did it come down?
23. 23.A shop sells 4420 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
24. 24.The price of a bicycle is ₹2460. It goes up by 40%. What is the new price (in ₹)?
25. 25.A water tank holds 280 litres. 40% of the water is used. How many litres are left?
26. 26.A shop sells 3480 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 5% and then comes down by 40% more. By what percent has it come down in all? =
28. 28.A water tank holds 3120 litres. 10% of the water is used. How many litres are left?
29. 29.The price of a school bag changes from ₹180 to ₹162. By what percent did it come down?
30. 30.The price of a school bag changes from ₹4180 to ₹5225. By what percent did it go up?
31. 31.A price comes down by 5% and then comes down by 25% more. By what percent has it come down in all? =
32. 32.A shop sells 3680 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
33. 33.The price of a bicycle is ₹600. It goes up by 30%. What is the new price (in ₹)?
34. 34.A water tank holds 1380 litres. 50% of the water is used. How many litres are left?
35. 35.The price of a school bag changes from ₹3140 to ₹2826. By what percent did it come down?
36. 36.The price of a school bag changes from ₹1900 to ₹1140. By what percent did it come down?
37. 37.A price goes up by 50% and then goes up by 15% more. By what percent has it gone up in all? =
38. 38.A shop sells 1020 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
39. 39.A shop sells 100 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
40. 40.A water tank holds 360 litres. 30% of the water is used. How many litres are left?

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