DROPPING A PRODUCT LINE

Game$-$Byte is a retailer who sells two types of gaming systems, Alpha and Beta. With rare

exceptions, Game$-$Byte sells a gaming headset with each system. Customers can use the headset

with either type of gaming system. The revenues and costs associated with these three products

are:

The store manager is considering dropping the Alpha gaming system product line. If the store

manager drops the product, sales dollars of the Beta System will increase by $30\%,$ but sales

dollars of the headsets will drop by $20\%.$ Will Sound$-$Byte's NOI increase or decrease if the

store manager drops the Beta system? By how much?