document.write( "Question 813869: A boat can travel 10 mph in still water. The boat travels 60 miles up a river with a 5 mph current and then returns to its starting point. Find the average rate for the round-trip using the definition of average rate. \n" ); document.write( "
Algebra.Com's Answer #490007 by Alan3354(69443)\"\" \"About 
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A boat can travel 10 mph in still water. The boat travels 60 miles up a river with a 5 mph current and then returns to its starting point. Find the average rate for the round-trip using the definition of average rate.
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\n" ); document.write( "Find the time up river.
\n" ); document.write( "Find the time down river.
\n" ); document.write( "Add them for the total time.
\n" ); document.write( "Avg rate = 120/total time.
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