Step-by-step explanation:
The basic principle in this type of problem is that work = rate times time or w = rt Tammy's rate is 1/2 of the job in 1 hour and Melissa's rate is 1/3 of the job in 1 hour. When the two of them work together, they both work the same amount of time which is t hours. Tammy's part of the job +Melissa's part of the job=1 complete job. (1/2)t + (1/3) t = 1Multiply both sides of the equation by the lowest common denominator which is 6 resulting in3t + 2t =5t = 6 t = 6/5 or 1 and 1/5 hour
