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Percentage lesson 9: Find the whole from a percent · Set 31 · 40 questions
TalentJR

How to work it out (Back to 100%): Write what you know: p% is a. The whole (100%) = a × 100 ÷ p. Check: p% of your answer must give a back.

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  1. 1.Riya spent ₹138, which is 75% of the pocket money. How much pocket money did Riya have, in rupees?
  2. 2.28 is 40% of ?
  3. 3.114 is 40% of ?
  4. 4.102 is 75% of ?
  5. 5.30% of a number is 51. What is the number?
  6. 6.Aarav spent ₹88, which is 80% of the pocket money. How much pocket money did Aarav have, in rupees?
  7. 7.15 is 75% of ?
  8. 8.186 is 60% of ?
  9. 9.20% of a number is 22. What is the number?
  10. 10.Anaya spent ₹4, which is 5% of the pocket money. How much pocket money did Anaya have, in rupees?
  11. 11.Arjun spent ₹100, which is 80% of the pocket money. How much pocket money did Arjun have, in rupees?
  12. 12.40% of a number is 42. What is the number?
  13. 13.30% of a number is 54. What is the number?
  14. 14.10% of a number is 28. What is the number?
  15. 15.Aarav spent ₹51, which is 30% of the pocket money. How much pocket money did Aarav have, in rupees?
  16. 16.Ishaan spent ₹21, which is 12% of the pocket money. How much pocket money did Ishaan have, in rupees?
  17. 17.Meera spent ₹18, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  18. 18.Kabir spent ₹112, which is 80% of the pocket money. How much pocket money did Kabir have, in rupees?
  19. 19.Dev spent ₹18, which is 10% of the pocket money. How much pocket money did Dev have, in rupees?
  20. 20.25% of a number is 28. What is the number?
  21. 21.15% of a number is 36. What is the number?
  22. 22.20% of a number is 6. What is the number?
  23. 23.2 is 25% of ?
  24. 24.10% of a number is 8. What is the number?
  25. 25.Meera spent ₹68, which is 40% of the pocket money. How much pocket money did Meera have, in rupees?
  26. 26.Riya spent ₹75, which is 20% of the pocket money. How much pocket money did Riya have, in rupees?
  27. 27.24 is 12% of ?
  28. 28.60% of a number is 3. What is the number?
  29. 29.Kabir spent ₹47, which is 25% of the pocket money. How much pocket money did Kabir have, in rupees?
  30. 30.5% of a number is 19. What is the number?
  31. 31.9 is 75% of ?
  32. 32.20% of a number is 29. What is the number?
  33. 33.40% of a number is 34. What is the number?
  34. 34.Anaya spent ₹45, which is 20% of the pocket money. How much pocket money did Anaya have, in rupees?
  35. 35.5% of a number is 12. What is the number?
  36. 36.Isha spent ₹24, which is 12% of the pocket money. How much pocket money did Isha have, in rupees?
  37. 37.Kabir spent ₹2, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  38. 38.40% of a number is 142. What is the number?
  39. 39.Sara spent ₹13, which is 20% of the pocket money. How much pocket money did Sara have, in rupees?
  40. 40.Diya spent ₹72, which is 30% of the pocket money. How much pocket money did Diya have, in rupees?

Answer key

  1. 184
  2. 70
  3. 285
  4. 136
  5. 170
  6. 110
  7. 20
  8. 310
  9. 110
  10. 80
  11. 125
  12. 105
  13. 180
  14. 280
  15. 170
  16. 175
  17. 150
  18. 140
  19. 180
  20. 112
  21. 240
  22. 30
  23. 8
  24. 80
  25. 170
  26. 375
  27. 200
  28. 5
  29. 188
  30. 380
  31. 12
  32. 145
  33. 85
  34. 225
  35. 240
  36. 200
  37. 20
  38. 355
  39. 65
  40. 240

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