Including tax, a pound of honey costs 5 + 1 = <<5+1=6>>6 dollars
The minimum purchase equals 40 / 5 = <<40/5=8>>8 pounds of honey.
Penny has bought 240 / 6 = <<240/6=40>>40 pounds of honey
Penny has exceeded the minimum purchase by 40 - 8 = <<40-8=32>>32 pounds.
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