On an order of 5 dozen boxes of a consumer product, a retailer receives an extra dozen free. This is equivalent to allowing him a discount of? Select
A) 16 2/6%
B) 16 8/3%
C) 16 2/3%
D) 16 2/8%
E) 16 1/3%
Clearly, the retailer gets 1 dozen out of 6 dozens free.   Equivalent discount = 1/6 * 100 = 16 2/3%.   Answer: 16 2/3%
<result>C</result>
On an order of 5 dozen boxes of a consumer product, a retailer receives an extra dozen free. This is equivalent to allowing him a discount of?