SOLUTION: Sandra and michael both work at a restaruant as servers. Sandra is able to service 5 tables of people per hour, while michael can service 4 tables per hour. If both had to serve 12

Question 952219: Sandra and michael both work at a restaruant as servers. Sandra is able to service 5 tables of people per hour, while michael can service 4 tables per hour. If both had to serve 12 table of people how long would it take?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Sandra and michael both work at a restaruant as servers. Sandra is able to service 5 tables of people per hour, while michael can service 4 tables per hour. If both had to serve 12 table of people how long would it take?
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Together rate:: 5+4 = 9 tables per hour
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time/tables = time/tables
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x/12 = 1/9
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x = 12/9 = 1 1/3 hrs = 1hr 20 minutes
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Cheers,
Stan H.
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