A production process consists of a threestep operation. The scrap rate is 17 percent for the first step and 7 percent for the other two steps. a. If the desired dally output is 456 units, how many units must be started to allow for loss due to scrap? (Do not round intermediate calculations. Round up your final answer to the next whole number.) b. If the scrap rate for each step could be cut in haf at every operation, how many units would this save in terms of the scrap alowance? (Do not round intermedlate calculations, Round up your final answer to the next whole number)