If 21 WOMen and 12 men can finish the work in 42 days.How many men should accompany 42 women to that the work will be completed in ten and half days???  Select the correct option.
A) 40 B) 45 C) 50 D) 60 E) 15
15 men using chain rule   ANSW15R:15
<result>E</result>
If 21 WOMen and 12 men can finish the work in 42 days.How many men should accompany 42 women to that the work will be completed in ten and half days???