Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 914 · 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.The price of a school bag changes from ₹4200 to ₹5250. By what percent did it go up?
2. 2.A shop sells 260 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
3. 3.A shop sells 4440 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
4. 4.A water tank holds 520 litres. 40% of the water is used. How many litres are left?
5. 5.A water tank holds 2760 litres. 15% of the water is used. How many litres are left?
6. 6.A water tank holds 2260 litres. 15% of the water is used. How many litres are left?
7. 7.A town has 2260 people. Its population grows by 10%. How many people live there now?
8. 8.A water tank holds 3120 litres. 25% of the water is used. How many litres are left?
9. 9.A water tank holds 1580 litres. 50% of the water is used. How many litres are left?
10. 10.The price of a school bag changes from ₹4960 to ₹4216. By what percent did it come down?
11. 11.A water tank holds 2440 litres. 20% of the water is used. How many litres are left?
12. 12.A water tank holds 3660 litres. 40% of the water is used. How many litres are left?
13. 13.A town has 3020 people. Its population grows by 20%. How many people live there now?
14. 14.A price goes up by 20% and then goes up by 40% more. By what percent has it gone up in all? =
15. 15.A price comes down by 20% and then comes down by 5% more. By what percent has it come down in all? =
16. 16.A water tank holds 820 litres. 50% of the water is used. How many litres are left?
17. 17.A price goes up by 40% and then goes up by 15% more. By what percent has it gone up in all? =
18. 18.A water tank holds 4680 litres. 25% of the water is used. How many litres are left?
19. 19.A water tank holds 940 litres. 10% of the water is used. How many litres are left?
20. 20.A water tank holds 2820 litres. 20% of the water is used. How many litres are left?
21. 21.The price of a bicycle is ₹4300. It goes up by 50%. What is the new price (in ₹)?
22. 22.A water tank holds 2240 litres. 30% of the water is used. How many litres are left?
23. 23.A water tank holds 3620 litres. 30% of the water is used. How many litres are left?
24. 24.The price of a bicycle is ₹3120. It goes up by 40%. What is the new price (in ₹)?
25. 25.A shop sells 1220 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
26. 26.A water tank holds 780 litres. 30% of the water is used. How many litres are left?
27. 27.A town has 60 people. Its population grows by 40%. How many people live there now?
28. 28.A water tank holds 500 litres. 20% of the water is used. How many litres are left?
29. 29.A water tank holds 2700 litres. 5% of the water is used. How many litres are left?
30. 30.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
31. 31.The price of a school bag changes from ₹4920 to ₹4182. By what percent did it come down?
32. 32.A shop sells 1400 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
33. 33.A water tank holds 4740 litres. 40% of the water is used. How many litres are left?
34. 34.A water tank holds 3080 litres. 25% of the water is used. How many litres are left?
35. 35.A water tank holds 3940 litres. 40% of the water is used. How many litres are left?
36. 36.The price of a bicycle is ₹3700. It goes up by 20%. What is the new price (in ₹)?
37. 37.The price of a school bag changes from ₹500 to ₹700. By what percent did it go up?
38. 38.A shop sells 3640 cups of tea a month. Next month it sells 15% more. How many cups does it sell next month?
39. 39.The price of a school bag changes from ₹3980 to ₹2985. By what percent did it come down?
40. 40.A price goes up by 10% and then comes down by 5%. By what percent has it gone up in all? =

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