Ship A leaves port sailing north at a speed of 25 mph. A half hour later, ship B leaves the same port sailing east at a speed of 16 mph. Let t (in hours) denote the time ship B has been at sea. Find an expression in terms of t giving the distance between the two ships and use this expression to find the distance between the two ships 3 hours after ship A has left port. Round the answer to the nearest tenth.
?
A. 86.0 mi
B. 78.0 mi
C. 83.5 mi
D. 83.0 mi
E. 85.0 mi
Answer: E
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