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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 260 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.The price of a school bag changes from ₹2600 to ₹2470. By what percent did it come down?
  2. 2.The price of a bicycle is ₹1840. It goes up by 20%. What is the new price (in ₹)?
  3. 3.A price goes up by 15% and then goes up by 50% more. By what percent has it gone up in all? =
  4. 4.A water tank holds 620 litres. 50% of the water is used. How many litres are left?
  5. 5.A water tank holds 3260 litres. 40% of the water is used. How many litres are left?
  6. 6.A price goes up by 25% and then goes up by 25% more. By what percent has it gone up in all? =
  7. 7.A shop sells 4280 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  8. 8.A water tank holds 4280 litres. 30% of the water is used. How many litres are left?
  9. 9.The price of a school bag changes from ₹4960 to ₹4712. By what percent did it come down?
  10. 10.A water tank holds 1620 litres. 5% of the water is used. How many litres are left?
  11. 11.The price of a school bag changes from ₹3560 to ₹2670. By what percent did it come down?
  12. 12.A water tank holds 3700 litres. 40% of the water is used. How many litres are left?
  13. 13.The price of a school bag changes from ₹2080 to ₹1248. By what percent did it come down?
  14. 14.The price of a school bag changes from ₹1480 to ₹1628. By what percent did it go up?
  15. 15.A town has 1880 people. Its population grows by 40%. How many people live there now?
  16. 16.A shop sells 160 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  17. 17.A water tank holds 3920 litres. 25% of the water is used. How many litres are left?
  18. 18.A price comes down by 5% and then comes down by 10% more. By what percent has it come down in all? =
  19. 19.The price of a bicycle is ₹940. It goes up by 20%. What is the new price (in ₹)?
  20. 20.A town has 3100 people. Its population grows by 50%. How many people live there now?
  21. 21.A price comes down by 30% and then comes down by 20% more. By what percent has it come down in all? =
  22. 22.A town has 2440 people. Its population grows by 20%. How many people live there now?
  23. 23.A water tank holds 2860 litres. 50% of the water is used. How many litres are left?
  24. 24.The price of a school bag changes from ₹2120 to ₹2756. By what percent did it go up?
  25. 25.A water tank holds 660 litres. 15% of the water is used. How many litres are left?
  26. 26.A water tank holds 2320 litres. 20% of the water is used. How many litres are left?
  27. 27.A water tank holds 1040 litres. 30% of the water is used. How many litres are left?
  28. 28.The price of a school bag changes from ₹1680 to ₹1848. By what percent did it go up?
  29. 29.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  30. 30.A town has 4680 people. Its population grows by 50%. How many people live there now?
  31. 31.The price of a school bag changes from ₹3280 to ₹4100. By what percent did it go up?
  32. 32.The price of a school bag changes from ₹1480 to ₹1406. By what percent did it come down?
  33. 33.The price of a school bag changes from ₹4900 to ₹6860. By what percent did it go up?
  34. 34.A water tank holds 2880 litres. 20% of the water is used. How many litres are left?
  35. 35.The price of a bicycle is ₹1280. It goes up by 50%. What is the new price (in ₹)?
  36. 36.A water tank holds 1860 litres. 30% of the water is used. How many litres are left?
  37. 37.A shop sells 4220 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  38. 38.A price goes up by 15% and then goes up by 5% more. By what percent has it gone up in all? =
  39. 39.A town has 3240 people. Its population grows by 15%. How many people live there now?
  40. 40.A shop sells 620 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?

Answer key

  1. 5
  2. 2208
  3. 72.5
  4. 310
  5. 1956
  6. 56.25
  7. 5564
  8. 2996
  9. 5
  10. 1539
  11. 25
  12. 2220
  13. 40
  14. 10
  15. 2632
  16. 208
  17. 2940
  18. 14.5
  19. 1128
  20. 4650
  21. 44
  22. 2928
  23. 1430
  24. 30
  25. 561
  26. 1856
  27. 728
  28. 10
  29. 43.75
  30. 7020
  31. 25
  32. 5
  33. 40
  34. 2304
  35. 1920
  36. 1302
  37. 4642
  38. 20.75
  39. 3726
  40. 651

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