8 men can finish a piece of work in 12 days whereas it takes 12 women to finish it in 14 days. If 8 men and 7 women undertake to complete the work, how many days will they take to complete the work?

• 1m work =1/12*8
  1w work=1/12*14
  8m+7w work=8*(1/12*8)+7*(14*12)=1/12+1/24=3/24
  which is 8 days
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