SOLUTION: An aircraft carrier and a nuclear-powered submarine leave a naval yard at the same time heading for the same destination. The aircraft carrier travels at a constant speed of 34.5 m

Question 395991: An aircraft carrier and a nuclear-powered submarine leave a naval yard at the same time heading for the same destination. The aircraft carrier travels at a constant speed of 34.5 mph and the sub travels at a constant speed of 20.2 mph until they are 100 miles apart. How long will it take for them to be 100 miles apart?
Found 2 solutions by rfer, Alan3354:
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
moving apart at 14.3 mph
100/14.3=7 hrs
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The difference in speed, or the speed of one relative to the other, is 14.3 mph (34.5 - 20.2)
100/14.3 = 6.993 hr =~ 7 hours
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Boats and aircraft use knots for speed, not mph.

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