From the sale of sleeping bags, a retailer made a gross profit of 13% of the wholesale cost. If each sleeping bag was sold for $28, what was the wholesale cost per bag? Pick one:
A) 3.0	B) 3.36	C) 24.78	D) 25.0	E) 31.36
Cost price * 1.13 = Selling price --&gt; Cost price * 1.13 = $28 --&gt; Cost price = $24.78.   Answer: 24.78.
<result>C</result>
From the sale of sleeping bags, a retailer made a gross profit of 13% of the wholesale cost. If each sleeping bag was sold for $28, what was the wholesale cost per bag?