57 persons can repair a road in 12 days, working 5 hours a day. In how many days will 30 persons, working 6 hours a day, complete the work? Choose the correct option
A) 10 B) 13 C) 14 D) 15 E) 19
According to the chain rule,   M1 x T1 = M2 x T2   Therefore, 57 x 12 x 5 = 30 x 6 x X   X = 19   Hence, the number of days = 19.   ANSW19R:19
<result>E</result>
57 persons can repair a road in 12 days, working 5 hours a day. In how many days will 30 persons, working 6 hours a day, complete the work?