If two painters can complete two rooms in two hours, how many hours 10 painters would it take to do 20 rooms? Choose the correct choice from the following answers.
A) 4 B) 3 C) 5 D) 8 E) 7
Explanation:   Two painters can complete two rooms in two hours.So 20 rooms can be painted in 4 hrs by 10 painters   4nswer: 4) 4 painters
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If two painters can complete two rooms in two hours, how many hours 10 painters would it take to do 20 rooms?