SOLUTION: Amy and Kim earned a total of $308 by working a total of 30 hours. If amy earns $8 an hour and kim earns $12 an hour. How many hours did each work? If someone could help turn t

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Question 234601: Amy and Kim earned a total of $308 by working a total of 30 hours. If amy earns $8 an hour and kim earns $12 an hour. How many hours did each work?
If someone could help turn this into an equation I would appreciate it. thank you
Answer by solver91311(5072) About Me  (Show Source):
You can put this solution on YOUR website!


Let represent the number of hours that Amy worked. Since they worked a total of 30 hours, Kim must have then worked hours. Amy was paid dollars for her work, and Kim was paid for her work. Together they earned $308, so:



You could also have just said is Amy's hours, and is Kim's hours and then made a system of two 2-variable equations:





But once you start to solve it by substitution, you would end up with either



or



anyway.

John