SOLUTION: Mr. and Mrs. Davis went on a cruise to a tropical island. They spent a total of 30 hours on the cruise ship traveling to and from the island. On Tuesday the cruise ship left its po

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Question 854385: Mr. and Mrs. Davis went on a cruise to a tropical island. They spent a total of 30 hours on the cruise ship traveling to and from the island. On Tuesday the cruise ship left its port and traveled at an average speed of 19 miles per hour to the island. On the return trip, the ship traveled by the same route at an average speed of 11 miles per hour. How many miles did the cruise ship travel from its port to the island?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
a+b=30,
19a=11b
a = 11, b = 19
11*19=209 miles