If it takes 8 identical printing presses exactly 4 hours to print 6,000 newspapers, how long would it take 4 of these presses to print 4,000 newspapers?	Options
A) 4 hours, 45 minutes  B) 4 hours, 30 minutes  C) 4 hours, 50 minutes  D) 5 hours, 20 minutes  E) 4 hours, 36 minutes
8 presses - 6,000 newspapers - 4 hours ;   4 presses - 3,000 newspapers - 4 hours ; (240 mins)   4 presses - 4,000 newspapers - 240/3000*4000 = 320 mins = 5 hrs 20 mins   Answer : 5 hours, 20 minutes
<result>D</result>
If it takes 8 identical printing presses exactly 4 hours to print 6,000 newspapers, how long would it take 4 of these presses to print 4,000 newspapers?