SOLUTION: A ferry leaves a harbor and travels to a resort island at an average speed of 18 mph. On the return trip, because of fog, the ferry travels at an average speed of 14 mph. The total
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-> SOLUTION: A ferry leaves a harbor and travels to a resort island at an average speed of 18 mph. On the return trip, because of fog, the ferry travels at an average speed of 14 mph. The total
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Question 1085382: A ferry leaves a harbor and travels to a resort island at an average speed of 18 mph. On the return trip, because of fog, the ferry travels at an average speed of 14 mph. The total time for the trip is 4 h. How far is the island from the harbor? Answer by ikleyn(52809) (Show Source):
The "time equation" in this case is
+ = 4,
where D is the distance under the question.
It is simple arithmetic to solve this equation for D.
As the first step, multiply both sides by 18*14.
