The number of pounds of pork Karl bought as a decimal number is 17.27 lb.
In the Foot Pound Second (F.P.S.) system, a pound is the fundamental unit of weight and weighs exactly 16 ounces.
The cost of Beef that Hilda bought is equal to 3 1/4 lb.
3 1/4 = ( 12 + 1 ) / 4 = ( 13/ 4 ) = 3.25 lb
The cost of the total meat she bought = 20 13/25 lb = ( 20 × 25 + 13 ) / 25 = ( 500 + 13 ) / 25 = 513/ 25 = 20.52 lb.
To determine the number of pounds of pork she bought, subtract.
The number of pounds of pork she bought = 20.52 lb - 3.25 lb = 17.27 lb.
Therefore, the number of pounds Karl bought in a decimal number is 17.27 lb of pork.
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