On an order of 19 dozen boxes of a consumer product, a retailer receives an extra dozen free. This is equivalent to allowing him a discount of: Choose the correct option:
A) 0.05%  B) 0.5%  C) 1%  D) 5%  E) 10%
Clearly, the retailer gets 1 dozen out of 20 dozens free.   Equivalent discount = 1/20 * 100= 
<gadget id="calculator">1/20 * 100</gadget>
<output>5</output>
5%.   Answer 5%) 5%
<result>D</result>
On an order of 19 dozen boxes of a consumer product, a retailer receives an extra dozen free. This is equivalent to allowing him a discount of: