A bakery opened yesterday with its daily supply of 40 dozen rolls. Half of the rolls were sold by noon, and 75 percent of the remaining rolls were sold between noon and closing time. How many dozen rolls had not been sold when the bakery closed yesterday? Choices:
A) 1
B) 2
C) 3
D) 4
E) 5
answer is E ...5 dozens ....   half sold by noon --&gt; 20 dozens (20 *12 =240)   remaining --&gt; 20 dozens i.e 240 eggs...   75% sold --&gt; 75*240/100 =180 eggs   remaining 25 % --&gt; 60 eggs (5 dozens ) --&gt; answer --  75*240/100= 
<gadget id="calculator"> --  75*240/100</gadget>
<output>180</output>
180 eggs   remaining 25 % --&gt; 60 eggs (5 dozens ) --&gt; answer
<result>E</result>
A bakery opened yesterday with its daily supply of 40 dozen rolls. Half of the rolls were sold by noon, and 75 percent of the remaining rolls were sold between noon and closing time. How many dozen rolls had not been sold when the bakery closed yesterday?