Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 163 · 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 2020 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
2. 2.A price comes down by 15% and then comes down by 15% more. By what percent has it come down in all? =
3. 3.The price of a school bag changes from ₹2480 to ₹2976. By what percent did it go up?
4. 4.A water tank holds 4640 litres. 15% of the water is used. How many litres are left?
5. 5.A water tank holds 820 litres. 40% of the water is used. How many litres are left?
6. 6.The price of a bicycle is ₹4540. It goes up by 25%. What is the new price (in ₹)?
7. 7.The price of a school bag changes from ₹780 to ₹897. By what percent did it go up?
8. 8.A shop sells 60 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
9. 9.A shop sells 2440 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 5% and then goes up by 30% more. By what percent has it gone up in all? =
11. 11.A town has 620 people. Its population grows by 5%. How many people live there now?
12. 12.The price of a school bag changes from ₹4380 to ₹3285. By what percent did it come down?
13. 13.The price of a school bag changes from ₹240 to ₹216. By what percent did it come down?
14. 14.A price comes down by 10% and then comes down by 50% more. By what percent has it come down in all? =
15. 15.A shop sells 3280 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
16. 16.The price of a bicycle is ₹2080. It goes up by 5%. What is the new price (in ₹)?
17. 17.A shop sells 900 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
18. 18.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
19. 19.The price of a school bag changes from ₹120 to ₹84. By what percent did it come down?
20. 20.A water tank holds 340 litres. 25% of the water is used. How many litres are left?
21. 21.A town has 4860 people. Its population grows by 5%. How many people live there now?
22. 22.The price of a school bag changes from ₹2980 to ₹2533. By what percent did it come down?
23. 23.A water tank holds 4340 litres. 50% of the water is used. How many litres are left?
24. 24.A town has 400 people. Its population grows by 30%. How many people live there now?
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 50% and then comes down by 5% more. By what percent has it come down in all? =
27. 27.A water tank holds 4100 litres. 20% of the water is used. How many litres are left?
28. 28.A price comes down by 5% and then comes down by 20% more. By what percent has it come down in all? =
29. 29.A water tank holds 1860 litres. 15% of the water is used. How many litres are left?
30. 30.A water tank holds 380 litres. 10% of the water is used. How many litres are left?
31. 31.A water tank holds 2560 litres. 10% of the water is used. How many litres are left?
32. 32.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
33. 33.A shop sells 4240 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
34. 34.A water tank holds 1120 litres. 10% of the water is used. How many litres are left?
35. 35.A water tank holds 1120 litres. 15% of the water is used. How many litres are left?
36. 36.The price of a bicycle is ₹1060. It goes up by 50%. What is the new price (in ₹)?
37. 37.A town has 2440 people. Its population grows by 15%. How many people live there now?
38. 38.The price of a bicycle is ₹1160. It goes up by 5%. What is the new price (in ₹)?
39. 39.A shop sells 3460 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
40. 40.The price of a bicycle is ₹3740. It goes up by 50%. What is the new price (in ₹)?

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