If it takes one man 30 minutes to assemble two computers and another man takes 25 minutes to assemble one How long does it take them both to assemble four computers?
In 150 mins the first man can assemble 10 computers and the second man 6. Therefore, 16 computers in 150 mins quartered is 4 computers in 37.5 mins. This assumes that they can work together on the same computer at their same individual rate.