The normal scrap loss for four successive operations is 5%, 3%, 15%, and 10% respectively, How many units should be started through in order to finish with 1,200 pieces? Find:
A) The total machine time needed if the operations times are 3,6, 4, and 5 minutes respectively.
B) The total cost if the cost per unit for each successive operation is $2, $5, $3, and $1, respectively