If 20 shirts can be purchased for 5 dollars, how many shirts can be purchased for 10 dollars? Choose the correct choice from the following answers.
A) 10 B) 30 C) 60 D) 40 E) 20
200/5= 
<gadget id="calculator">200/5</gadget>
<output>40</output>
40   Ans= 40
<result>D</result>
If 20 shirts can be purchased for 5 dollars, how many shirts can be purchased for 10 dollars?