document.write( "Question 347770: Sailing with the current, a boat takes 3 hours to travel 48 miles. The return trip, against the current, takes 4 hours. Find the average speed of the boat for the entire trip, and the speed of the current?\r
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document.write( "I got 14 mph for the speed of the boat and 2mph for the current, but the answer is 13 5/7 mph for the speed of the boat. This is what I got:\r
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document.write( "x-y*4= 48
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document.write( "x+y*3= 48 and then solved by elimination \n" );
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Algebra.Com's Answer #248644 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Sailing with the current, a boat takes 3 hours to travel 48 miles. The return trip, against the current, takes 4 hours. Find the average speed of the boat for the entire trip, and the speed of the current? \n" ); document.write( "I got 14 mph for the speed of the boat and 2mph for the current, but the answer is 13 5/7 mph for the speed of the boat. This is what I got: \n" ); document.write( "x-y*4= 48 \n" ); document.write( "x+y*3= 48 and then solved by elimination \n" ); document.write( "------------- \n" ); document.write( "48/3 = 16 mph \n" ); document.write( "48/4 = 12 mph \n" ); document.write( "The speed of the boat is the average = 14 mph \n" ); document.write( "The current = 2 mph \n" ); document.write( "The answer is not 13 5/7 \n" ); document.write( " \n" ); document.write( " |