Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 143 · 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 4380 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
2. 2.A town has 2940 people. Its population grows by 15%. How many people live there now?
3. 3.A water tank holds 460 litres. 5% of the water is used. How many litres are left?
4. 4.A town has 3680 people. Its population grows by 10%. How many people live there now?
5. 5.A water tank holds 2100 litres. 40% of the water is used. How many litres are left?
6. 6.A price goes up by 30% and then comes down by 10%. By what percent has it gone up in all? =
7. 7.A town has 3900 people. Its population grows by 25%. How many people live there now?
8. 8.A town has 2380 people. Its population grows by 10%. How many people live there now?
9. 9.The price of a bicycle is ₹1600. It goes up by 25%. What is the new price (in ₹)?
10. 10.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
11. 11.A shop sells 1620 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
12. 12.The price of a school bag changes from ₹940 to ₹893. By what percent did it come down?
13. 13.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
14. 14.A water tank holds 780 litres. 40% of the water is used. How many litres are left?
15. 15.A town has 2680 people. Its population grows by 20%. How many people live there now?
16. 16.A water tank holds 3980 litres. 10% of the water is used. How many litres are left?
17. 17.The price of a bicycle is ₹2880. It goes up by 50%. What is the new price (in ₹)?
18. 18.A shop sells 3140 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
19. 19.The price of a bicycle is ₹1440. It goes up by 30%. What is the new price (in ₹)?
20. 20.The price of a bicycle is ₹4460. It goes up by 50%. What is the new price (in ₹)?
21. 21.A shop sells 2240 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
22. 22.A shop sells 3980 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
23. 23.A water tank holds 340 litres. 25% of the water is used. How many litres are left?
24. 24.The price of a school bag changes from ₹1180 to ₹944. By what percent did it come down?
25. 25.A water tank holds 1020 litres. 40% of the water is used. How many litres are left?
26. 26.A shop sells 2780 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
27. 27.A water tank holds 2840 litres. 50% of the water is used. How many litres are left?
28. 28.The price of a bicycle is ₹3160. It goes up by 50%. What is the new price (in ₹)?
29. 29.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =
30. 30.The price of a school bag changes from ₹2340 to ₹1872. By what percent did it come down?
31. 31.A water tank holds 2320 litres. 10% of the water is used. How many litres are left?
32. 32.A price comes down by 40% and then comes down by 20% more. By what percent has it come down in all? =
33. 33.A price goes up by 5% and then goes up by 20% more. By what percent has it gone up in all? =
34. 34.A price goes up by 50% and then goes up by 5% more. By what percent has it gone up in all? =
35. 35.A town has 2140 people. Its population grows by 20%. How many people live there now?
36. 36.A shop sells 740 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
37. 37.The price of a school bag changes from ₹3900 to ₹3705. By what percent did it come down?
38. 38.A water tank holds 2080 litres. 20% of the water is used. How many litres are left?
39. 39.A water tank holds 2300 litres. 10% of the water is used. How many litres are left?
40. 40.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =

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