if it takes 4 identical printing presses exactly 6 hours to print 8000 newspapers , how long would it take 2 of these presses to print 6000 newspapers ?  Choose the correct answer
A) 5 hrs
B) 7 hrs
C) 8 hrs
D) 9 hrs 50 mins
E) 9 hrs

Rationale: 4 presses - 8,000 newspapers - 6 hours ; 2 presses - 4,000 newspapers - 6 hours ; ( 360 mins ) 2 presses - 6,000 newspapers - 360 / 4000 * 6000 = 540 mins = 9 hrs answer : e
Answer: E