1, assuming that y sets are assembled every day, and 2y sets are obtained after adopting new technology, then there is a countable equation 6/y+(30-6)/y=3, that is, those assembled by improved technology and those assembled by improved technology are equal to 3, and the solution is y = 6 2. Based on two conditions, it is easy to draw that the number of people is 50, and the number of ships in A is B, then 4A+. At full load, the more boats, the better. A=2b=7 is just full, and b reaches the maximum value of 3. Add the right pass to 3x-4/(x-1) (x-2) = (a+b) x-(2a+b)/(x-65438+).