63 men working 8 hours per day dig 30 m deep. How many extra men should be put to dig to a depth of 50 m working 6 hours per day?	Choose the correct choice from the following answers: A) A)87 B) B)77 C) C)66 D) D)55 E) E)97
(63 * 8)/30   = (x * 6)/50   =&gt; x =140   140 – 63   = 77   Answer:77
<result>B</result>
63 men working 8 hours per day dig 30 m deep. How many extra men should be put to dig to a depth of 50 m working 6 hours per day?