Jessica's pumpkin weighs half the weight of Brad's 54-pound pumpkin so 54/2 = <<54/2=27>>27 pounds

Betty's pumpkin weighs 4 times the amount of Jessica's 27-pound pumpkin so it weighs 4*27 = <<4*27=108>>108

Betty has the heaviest pumpkin at 108 pounds while Jessica's is the lowest at 27 pounds so the difference is 108-27 =<<108-27=81>>81 pounds

# Answer

81
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The county fair was hosting a pumpkin contest to see who could grow the biggest pumpkin in pounds.  Brad entered his pumpkin with a weight of 54 pounds.  Jessica's was half the weight of Brad's.  Betty's pumpkin weight 4 times the amount of Jessica's pumpkin.  What is the difference between the heaviest and lightest pumpkin in  pounds?
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81
The county fair was hosting a pumpkin contest to see who could grow the biggest pumpkin in pounds.  Brad entered his pumpkin with a weight of 54 pounds.  Jessica's was half the weight of Brad's.  Betty's pumpkin weight 4 times the amount of Jessica's pumpkin.  What is the difference between the heaviest and lightest pumpkin in  pounds?
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