# If 15 men or 24 women or 36 boys can do a piece of work in 12 days, working 8 hours a day, how many men must be associated with 12 women and 6 boys to do another piece of work 2$1 \over 4$ times as great in 30 days working 6 hours a day ?

 [ A ]    4 [ B ]    8 [ C ]    6 [ D ]    10 [ E ]    12
 Answer : Option B Explanation :