If three painters can complete three rooms in two hours, how many hours 5 painters would it take to do 20 rooms?  Choose the correct choice from the following options.
A) 6
B) 9
C) 7
D) 8
E) 5
Explanation:   Three painters can complete three rooms in two hours. So 20 rooms can be painted in 8 hrs by 5 painters   Answer: 5) 5 painters
<result>E</result>
If three painters can complete three rooms in two hours, how many hours 5 painters would it take to do 20 rooms?