Answer:
550.66 gallons
Step-by-step explanation:
Given:
Farm product contains 12.5% w/v concentrate of tiamulin hydrogen fumarate
i.e
100 mL of solution of farm product contains 12.5 g of tiamulin hydrogen fumarate
Thus,
by unitary method
1 mL of solution contains
of tiamulin hydrogen fumarate
therefore,
1 L i.e 1000 mL of solution contains
of tiamulin hydrogen fumarate
or
1 L i.e 1000 mL of solution contains 125 g of tiamulin hydrogen fumarat
also, final product contains 227 mg of tiamulin hydrogen fumarate per gallon
therefore,
The number of gallons of medicated water that can be prepared
=
=
= 
= 550.66 gallons