If 8 workers can build 8 cars in 8 days, then how many days would it take 4 workers to build 4 cars?
Choose the correct choice.
A) 2	B) 4	C) 8	D) 12	E) 16
8 workers can build 1 car per day on average.   1 worker can build 1/8 of a car per day.   4 workers can build 1/2 car per day.   The time required to build 4 cars is 4 / (1/2)= 
<gadget id="calculator">4 / (1/2)</gadget>
<output>8</output>
8 days   The answer is 8.
<result>C</result>
If 8 workers can build 8 cars in 8 days, then how many days would it take 4 workers to build 4 cars?