Consider a simple three$-$step manufacturing process as illustrated in the given figure. Assuming demand is $1,000$ units, what is the required input to meet demand? You'll note that the required input is the same if the scrap rates are reversed fir process $1$ abd $3.$ Assume that the scrap cost is $$5$ at process $1$ $$10$ at process $2$ and $$15$ at orocess $3.$ The defective rares are $3\%5\%7\%$