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Percentage lesson 9: Find the whole from a percent · Set 128 · 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 150. What is the number?
  2. 2.Aarav spent ₹59, which is 25% of the pocket money. How much pocket money did Aarav have, in rupees?
  3. 3.25% of a number is 11. What is the number?
  4. 4.80% of a number is 280. What is the number?
  5. 5.20% of a number is 68. What is the number?
  6. 6.25% of a number is 50. What is the number?
  7. 7.60% of a number is 54. What is the number?
  8. 8.Riya spent ₹11, which is 20% of the pocket money. How much pocket money did Riya have, in rupees?
  9. 9.60% of a number is 234. What is the number?
  10. 10.15 is 12% of ?
  11. 11.75% of a number is 135. What is the number?
  12. 12.Dev spent ₹4, which is 10% of the pocket money. How much pocket money did Dev have, in rupees?
  13. 13.Kabir spent ₹72, which is 30% of the pocket money. How much pocket money did Kabir have, in rupees?
  14. 14.27 is 15% of ?
  15. 15.Arjun spent ₹124, which is 80% of the pocket money. How much pocket money did Arjun have, in rupees?
  16. 16.Aarav spent ₹45, which is 12% of the pocket money. How much pocket money did Aarav have, in rupees?
  17. 17.7 is 5% of ?
  18. 18.75% of a number is 147. What is the number?
  19. 19.60% of a number is 36. What is the number?
  20. 20.25% of a number is 90. What is the number?
  21. 21.65 is 25% of ?
  22. 22.Diya spent ₹39, which is 60% of the pocket money. How much pocket money did Diya have, in rupees?
  23. 23.12% of a number is 9. What is the number?
  24. 24.40% of a number is 158. What is the number?
  25. 25.30% of a number is 81. What is the number?
  26. 26.Kabir spent ₹62, which is 40% of the pocket money. How much pocket money did Kabir have, in rupees?
  27. 27.56 is 25% of ?
  28. 28.5% of a number is 17. What is the number?
  29. 29.24 is 20% of ?
  30. 30.220 is 80% of ?
  31. 31.17 is 25% of ?
  32. 32.Isha spent ₹24, which is 12% of the pocket money. How much pocket money did Isha have, in rupees?
  33. 33.25% of a number is 20. What is the number?
  34. 34.Arjun spent ₹43, which is 20% of the pocket money. How much pocket money did Arjun have, in rupees?
  35. 35.40% of a number is 46. What is the number?
  36. 36.Anaya spent ₹268, which is 80% of the pocket money. How much pocket money did Anaya have, in rupees?
  37. 37.33 is 12% of ?
  38. 38.Kabir spent ₹270, which is 75% of the pocket money. How much pocket money did Kabir have, in rupees?
  39. 39.61 is 25% of ?
  40. 40.15% of a number is 6. What is the number?

Answer key

  1. 250
  2. 236
  3. 44
  4. 350
  5. 340
  6. 200
  7. 90
  8. 55
  9. 390
  10. 125
  11. 180
  12. 40
  13. 240
  14. 180
  15. 155
  16. 375
  17. 140
  18. 196
  19. 60
  20. 360
  21. 260
  22. 65
  23. 75
  24. 395
  25. 270
  26. 155
  27. 224
  28. 340
  29. 120
  30. 275
  31. 68
  32. 200
  33. 80
  34. 215
  35. 115
  36. 335
  37. 275
  38. 360
  39. 244
  40. 40

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