Hello I need exercise solution N 13 chapter 2 of the book facilities design

'Parries Confectionery Company is considering the introduction of a new toffee. It requires four processes: A, B, C, and D in sequence. The equipment required for each process is available in the company now and is dedicated to the production of another type of candy. Although some capacity is available on all the equipment types, management is not sure whether they need to buy additional pieces. To aid management in decision making, the following information is available: (a) The four pieces of equipmentone for each typeare available 50% of the time