document.write( "Question 627413: From a point on a lake, two boats are driven in opposite directions, one at 9 mph and the other at 10 mph. In how many hours will they be 57 minutes apart? \n" ); document.write( "
Algebra.Com's Answer #394925 by Alan3354(69443)\"\" \"About 
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From a point on a lake, two boats are driven in opposite directions, one at 9 mph and the other at 10 mph. In how many hours will they be 57 minutes apart?
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\n" ); document.write( "Going in opposite directions, speeds are added.
\n" ); document.write( "--> 19 mi/hr
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\n" ); document.write( "d = r*t
\n" ); document.write( "t = d/r
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