How many cases do you need if you have to pack 50 dozens of bar soaps into cases that each hold 50 soaps?  Choose the correct choice from the following options.
A) 15 B) 14 C) 13 D) 12 E) 10
12   12   50 dozens of bar soaps = 600 soaps   600 ÷ 50 = 12.
<result>D</result>
How many cases do you need if you have to pack 50 dozens of bar soaps into cases that each hold 50 soaps?