SOLUTION: Mr. and Mrs. Berg went on a cruise to a tropical island. They spent a total of 26 hours on the cruise ship traveling to and from the island. On Wednesday the cruise ship left its p
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Question 1101222: Mr. and Mrs. Berg went on a cruise to a tropical island. They spent a total of 26 hours on the cruise ship traveling to and from the island. On Wednesday the cruise ship left its port and traveled at an average speed of 15 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?
A.165 mi
B.121 mi
C.338 mi
D.286 mi Answer by ikleyn(52775) (Show Source):
Therefore, I will not prononciate the usual (and common) mantra.
Instead, I will write the equation relevant to this problem, and then will solve it.
+ = 26 hours.
============> multiply all the terms by 165 = 15*11. You will get
11D + 15D = 26*165
26D = 26*155 ====> D = 155.
Answer. The distance under the question is 155 miles.
