document.write( "Question 678025: A motorboat can maintain a constant speed of 16mph relative to the water. The boat makes a trip upstream to a certain point in 20 minutes; the trip takes 15 minutes. What is the current's speed? \n" ); document.write( "
Algebra.Com's Answer #421153 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! Let \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "given: \n" ); document.write( "Going upstream: \n" ); document.write( "(1) \n" ); document.write( "Going downstream: \n" ); document.write( "(2) \n" ); document.write( "------------------------ \n" ); document.write( "Substitute (1) into (2) \n" ); document.write( " \n" ); document.write( "Multiply both sides by \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "The current's speed is 2.286 mi/hr\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |