Posted by unknown on Monday, November 3, 2008 at 8:09am.
The cost of the milk to the store is
30 x $1.58 = $47.40
To recover the cost of the milk if 15% lost then the cost per gallon is
$47.40/25.5 = $1.86 per gallon
$1.86/0.80 = $2.35 per gallon
which is %20 markup based on selling price.
20% markup of cost will give a different result.
...check my maths though!
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