Crew A can build a complete car in 20 minutes and Crew B can build a complete car in 25 minutes. If both crews work independently and start at the same time, what is the shortest amount of time V it could take for 10 cars to be complete?  Choose one:
A) 111 1/9 minutes
B) 115 2/5 minutes
C) 116 minutes
D) 120 minutes
E) 125 minutes
A builds 4 cars in 80 min   B builds 4 cars in 100 min   So A builds another car in another 20 min (i.e total 5 cars)   B builds another car in another 25 minutes (i.e, total 5 cars)   However, A can build another car in next 20 min (i.e total 6 cars)   So total time V= 125 min by B, which is &gt; 120 min by A   B - 4 cars, A - 6 cars   Answer = 120 minutes
<result>D</result>
Crew A can build a complete car in 20 minutes and Crew B can build a complete car in 25 minutes. If both crews work independently and start at the same time, what is the shortest amount of time V it could take for 10 cars to be complete?