During a Thanksgiving weekend, a car rental company rented seven-tenths of the vehicles with it including three fifths of the 4WDs that it had. If 60% of the vehicles are 4WDs, then what percent of the vehicles that were not rented were not 4WDs?	Choose the correct choice from the following:
A) 20%	B) 30%	C) 40%	D) 60%	E) 25%
60% of the vehicles are 4WDs:   60 are 4WDs and 40 are not.   Seven-tenths (70%) of the vehicles were rented:   70 rented and 30 not.   Three fifths of the 4WDs were rented:    3/5*60= 
<gadget id="calculator"> 3/5*60</gadget>
<output>36</output>
36 4WDs were rented and 24 not.   So, out of 30 vehicles that were not rented 24 were 4WDs and 6 not: 6/30= 20%.   20%nswer: 20%.
<result>A</result>
During a Thanksgiving weekend, a car rental company rented seven-tenths of the vehicles with it including three fifths of the 4WDs that it had. If 60% of the vehicles are 4WDs, then what percent of the vehicles that were not rented were not 4WDs?