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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 995 · 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.A water tank holds 3020 litres. 20% of the water is used. How many litres are left?
  2. 2.The price of a school bag changes from ₹4200 to ₹2940. By what percent did it come down?
  3. 3.A price goes up by 40% and then comes down by 25%. By what percent has it gone up in all? =
  4. 4.A shop sells 440 cups of tea a month. Next month it sells 50% more. How many cups does it sell next month?
  5. 5.A water tank holds 760 litres. 5% of the water is used. How many litres are left?
  6. 6.The price of a bicycle is ₹3100. It goes up by 5%. What is the new price (in ₹)?
  7. 7.A water tank holds 3800 litres. 10% of the water is used. How many litres are left?
  8. 8.A water tank holds 3680 litres. 25% of the water is used. How many litres are left?
  9. 9.A price goes up by 5% and then goes up by 15% more. By what percent has it gone up in all? =
  10. 10.The price of a school bag changes from ₹3880 to ₹2328. By what percent did it come down?
  11. 11.The price of a school bag changes from ₹2540 to ₹3302. By what percent did it go up?
  12. 12.A price goes up by 20% and then goes up by 10% more. By what percent has it gone up in all? =
  13. 13.A price goes up by 40% and then goes up by 5% more. By what percent has it gone up in all? =
  14. 14.A town has 4880 people. Its population grows by 50%. How many people live there now?
  15. 15.The price of a school bag changes from ₹3040 to ₹3952. By what percent did it go up?
  16. 16.The price of a bicycle is ₹3020. It goes up by 5%. What is the new price (in ₹)?
  17. 17.A price goes up by 5% and then goes up by 10% more. By what percent has it gone up in all? =
  18. 18.A town has 540 people. Its population grows by 5%. How many people live there now?
  19. 19.A price goes up by 5% and then goes up by 5% more. By what percent has it gone up in all? =
  20. 20.A price goes up by 15% and then goes up by 10% more. By what percent has it gone up in all? =
  21. 21.The price of a bicycle is ₹380. It goes up by 20%. What is the new price (in ₹)?
  22. 22.The price of a school bag changes from ₹2420 to ₹2904. By what percent did it go up?
  23. 23.A price comes down by 25% and then comes down by 5% more. By what percent has it come down in all? =
  24. 24.A shop sells 3400 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  25. 25.A shop sells 3900 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
  26. 26.A town has 2380 people. Its population grows by 10%. How many people live there now?
  27. 27.A price goes up by 15% and then goes up by 40% more. By what percent has it gone up in all? =
  28. 28.The price of a school bag changes from ₹2880 to ₹4032. By what percent did it go up?
  29. 29.A water tank holds 420 litres. 5% of the water is used. How many litres are left?
  30. 30.A water tank holds 4380 litres. 15% of the water is used. How many litres are left?
  31. 31.The price of a bicycle is ₹360. It goes up by 20%. What is the new price (in ₹)?
  32. 32.A price comes down by 5% and then comes down by 30% more. By what percent has it come down in all? =
  33. 33.A water tank holds 2480 litres. 40% of the water is used. How many litres are left?
  34. 34.A water tank holds 1940 litres. 30% of the water is used. How many litres are left?
  35. 35.The price of a school bag changes from ₹420 to ₹378. By what percent did it come down?
  36. 36.A water tank holds 4740 litres. 10% of the water is used. How many litres are left?
  37. 37.A price goes up by 10% and then goes up by 50% more. By what percent has it gone up in all? =
  38. 38.The price of a school bag changes from ₹3880 to ₹3298. By what percent did it come down?
  39. 39.The price of a bicycle is ₹1800. It goes up by 40%. What is the new price (in ₹)?
  40. 40.A shop sells 2180 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?

Answer key

  1. 2416
  2. 30
  3. 5
  4. 660
  5. 722
  6. 3255
  7. 3420
  8. 2760
  9. 20.75
  10. 40
  11. 30
  12. 32
  13. 47
  14. 7320
  15. 30
  16. 3171
  17. 15.5
  18. 567
  19. 10.25
  20. 26.5
  21. 456
  22. 20
  23. 28.75
  24. 3570
  25. 5070
  26. 2618
  27. 61
  28. 40
  29. 399
  30. 3723
  31. 432
  32. 33.5
  33. 1488
  34. 1358
  35. 10
  36. 4266
  37. 65
  38. 15
  39. 2520
  40. 2725

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