Ziba, Inc. manufactures Titanium and Carbon frame racquets. In the coming production period, Ziba needs to decide how many of each type of racquets should be produced in order to maximize profit. Each racquet goes through two production processes. Each Titanium frame requires 21 minutes of process I time and 15 minutes of process II time. Each Carbon frame requires 15 minutes of process I time and 20 minutes of process II time. In the upcoming production period, at least 27 hours are available in process I an