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Percentage lesson 9: Find the whole from a percent · Set 541 · 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. 1.60% of a number is 48. What is the number?
  2. 2.Ishaan spent ₹15, which is 12% of the pocket money. How much pocket money did Ishaan have, in rupees?
  3. 3.Meera spent ₹36, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  4. 4.231 is 75% of ?
  5. 5.45 is 25% of ?
  6. 6.105 is 30% of ?
  7. 7.Riya spent ₹18, which is 5% of the pocket money. How much pocket money did Riya have, in rupees?
  8. 8.Rohan spent ₹17, which is 5% of the pocket money. How much pocket money did Rohan have, in rupees?
  9. 9.40% of a number is 44. What is the number?
  10. 10.Kabir spent ₹78, which is 40% of the pocket money. How much pocket money did Kabir have, in rupees?
  11. 11.20% of a number is 41. What is the number?
  12. 12.Rohan spent ₹95, which is 25% of the pocket money. How much pocket money did Rohan have, in rupees?
  13. 13.25% of a number is 67. What is the number?
  14. 14.180 is 75% of ?
  15. 15.15% of a number is 48. What is the number?
  16. 16.30% of a number is 72. What is the number?
  17. 17.15% of a number is 51. What is the number?
  18. 18.78 is 25% of ?
  19. 19.36 is 20% of ?
  20. 20.75% of a number is 153. What is the number?
  21. 21.84 is 60% of ?
  22. 22.40 is 10% of ?
  23. 23.59 is 20% of ?
  24. 24.Arjun spent ₹58, which is 20% of the pocket money. How much pocket money did Arjun have, in rupees?
  25. 25.Aarav spent ₹116, which is 50% of the pocket money. How much pocket money did Aarav have, in rupees?
  26. 26.12 is 30% of ?
  27. 27.27 is 12% of ?
  28. 28.80% of a number is 56. What is the number?
  29. 29.30% of a number is 21. What is the number?
  30. 30.80% of a number is 16. What is the number?
  31. 31.20% of a number is 37. What is the number?
  32. 32.213 is 75% of ?
  33. 33.10% of a number is 5. What is the number?
  34. 34.Isha spent ₹70, which is 50% of the pocket money. How much pocket money did Isha have, in rupees?
  35. 35.Kabir spent ₹150, which is 75% of the pocket money. How much pocket money did Kabir have, in rupees?
  36. 36.Anaya spent ₹34, which is 40% of the pocket money. How much pocket money did Anaya have, in rupees?
  37. 37.40% of a number is 46. What is the number?
  38. 38.33 is 15% of ?
  39. 39.Meera spent ₹96, which is 40% of the pocket money. How much pocket money did Meera have, in rupees?
  40. 40.Aarav spent ₹13, which is 20% of the pocket money. How much pocket money did Aarav have, in rupees?

Answer key

  1. 80
  2. 125
  3. 300
  4. 308
  5. 180
  6. 350
  7. 360
  8. 340
  9. 110
  10. 195
  11. 205
  12. 380
  13. 268
  14. 240
  15. 320
  16. 240
  17. 340
  18. 312
  19. 180
  20. 204
  21. 140
  22. 400
  23. 295
  24. 290
  25. 232
  26. 40
  27. 225
  28. 70
  29. 70
  30. 20
  31. 185
  32. 284
  33. 50
  34. 140
  35. 200
  36. 85
  37. 115
  38. 220
  39. 240
  40. 65

Free percentage lessons, practice and worksheets at talentjr.in/how-to-calculate-percentage