Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 29 · 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 price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
2. 2.A price goes up by 5% and then goes up by 40% more. By what percent has it gone up in all? =
3. 3.A price goes up by 40% and then goes up by 20% more. By what percent has it gone up in all? =
4. 4.The price of a school bag changes from ₹2940 to ₹3675. By what percent did it go up?
5. 5.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
6. 6.A price comes down by 50% and then comes down by 50% more. By what percent has it come down in all? =
7. 7.A shop sells 2800 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
8. 8.A water tank holds 2060 litres. 30% of the water is used. How many litres are left?
9. 9.A water tank holds 300 litres. 50% of the water is used. How many litres are left?
10. 10.A shop sells 120 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
11. 11.A water tank holds 4840 litres. 20% of the water is used. How many litres are left?
12. 12.A town has 4480 people. Its population grows by 50%. How many people live there now?
13. 13.The price of a school bag changes from ₹4480 to ₹3136. By what percent did it come down?
14. 14.A water tank holds 3380 litres. 10% of the water is used. How many litres are left?
15. 15.The price of a school bag changes from ₹4860 to ₹4617. By what percent did it come down?
16. 16.The price of a school bag changes from ₹4220 to ₹5275. By what percent did it go up?
17. 17.A water tank holds 3780 litres. 20% of the water is used. How many litres are left?
18. 18.A shop sells 3120 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
19. 19.The price of a school bag changes from ₹2200 to ₹1980. By what percent did it come down?
20. 20.A town has 3760 people. Its population grows by 10%. How many people live there now?
21. 21.A water tank holds 2980 litres. 10% of the water is used. How many litres are left?
22. 22.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
23. 23.The price of a bicycle is ₹3040. It goes up by 10%. What is the new price (in ₹)?
24. 24.A price goes up by 50% and then goes up by 50% more. By what percent has it gone up in all? =
25. 25.A town has 4000 people. Its population grows by 10%. How many people live there now?
26. 26.A water tank holds 1160 litres. 40% of the water is used. How many litres are left?
27. 27.A price goes up by 30% and then comes down by 15%. By what percent has it gone up in all? =
28. 28.A water tank holds 620 litres. 40% of the water is used. How many litres are left?
29. 29.The price of a school bag changes from ₹1160 to ₹1334. By what percent did it go up?
30. 30.A price comes down by 15% and then comes down by 5% more. By what percent has it come down in all? =
31. 31.A water tank holds 340 litres. 40% of the water is used. How many litres are left?
32. 32.A town has 4000 people. Its population grows by 15%. How many people live there now?
33. 33.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
34. 34.The price of a school bag changes from ₹3820 to ₹1910. By what percent did it come down?
35. 35.A water tank holds 3400 litres. 40% of the water is used. How many litres are left?
36. 36.A water tank holds 1060 litres. 5% of the water is used. How many litres are left?
37. 37.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
38. 38.A price goes up by 20% and then goes up by 50% more. By what percent has it gone up in all? =
39. 39.A town has 4020 people. Its population grows by 30%. How many people live there now?
40. 40.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =

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