A company has two models of computers, model P and model Q. Operating at a constant rate, a model P computer can complete a certain task in 12 minutes and a model Q computer can complete the same task in 6 minutes. If the company used the same number of each model of computer to complete the task in 1 minute, how many model P computers were used?	Choose the correct choice from the following.
A) 3 B) 4 C) 1 D) 5 E) 6
Let's say 1 work is processing 12 gb of data.   Model P : 1 gb per min   Model Q : 2 gb per min   Working together, 1 P and 1 Q = 3 gb per min   So, 4 times as many computers would work at 12 gb per min.   So no. of P = 4   Answer is 4
<result>B</result>
A company has two models of computers, model P and model Q. Operating at a constant rate, a model P computer can complete a certain task in 12 minutes and a model Q computer can complete the same task in 6 minutes. If the company used the same number of each model of computer to complete the task in 1 minute, how many model P computers were used?