SOLUTION: An aircraft carrier left hawaii traveling west seven hours before a container ship. The container ship traveled in the opposite direction going 5 km/h slower than the aircraft carr

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Question 1048094: An aircraft carrier left hawaii traveling west seven hours before a container ship. The container ship traveled in the opposite direction going 5 km/h slower than the aircraft carrier for six hours after which time the ships were 540 km apart. ?Find the aircraft carrier's speed?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
You can think of this as one of them
standing still and the other one traveling
at the sum of their speeds
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Let +s+ = the speed of the aircraft carrier in km/hr
+s+-+5+ = the speed of the container ship in km/hr
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+540+=+%28+s+%2B+s+-+5+%29%2A6+
+540+=+%28+2s+-+5+%29%2A6+
+540+=+12s+-+30+
+12s+=+570+
+s+=+47.5+
and
+47.5+-+5+=+42.5+
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The aircraft carrier's speed is 47.5 km/hr
----------------------
check:
+d%5B1%5D+=+47.5%2A6+
+d%5B1%5D+=+285+ km
and
+d%5B2%5D+=+42.5%2A6+
+d%5B2%5D+=+255+ km
-------------------
+d%5B1%5D+%2B+d%5B2%5D+=+285+%2B+255+
+d%5B1%5D+%2B+d%5B2%5D+=+540+ km
OK