7 men and 6 women can omplete a job in 5 days.9 men and 7 women can complete it in 4 days.find the time in which 17 men and 6 women can complete it

• ans= 2and 1/2 days
  (7 men & 6 women )'s 5 days work = (9 men & 7 women)'s 4 days work
  =>(35 men & 30 women )'s 1 days work = (36 men & 28 women)'s 1 days work
  => 1 man's 1 day work = 2 women's 1 day work
  => (7 men & 6 women )'s work = 2*7+6= 20 women's work
  7 men & 6 women i.e. 20 women can complete it works =5 days
  =>17 men & 6 women i.e. 17*2+6=40 women will complete = 5*20/40
  = 5/2
  = 2 and 1/2 days
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