document.write( "Question 516862: What is the speed of a boat and a current, if a boat travels 48 miles downstream in three hours. Than takes 6 hours to travel the same distance upstream? \n" ); document.write( "

Algebra.Com's Answer #344538 by Maths68(1474) $\"\"$ $\"About$

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Let
\n" ); document.write( "Speed of boat = b
\n" ); document.write( "speed of current = c\r
\n" ); document.write( "\n" ); document.write( "Upstream
\n" ); document.write( "Boat against the Current
\n" ); document.write( "b-c=48/6= 8 ..............(1)
\n" ); document.write( "Downstream
\n" ); document.write( "Boat with the Current
\n" ); document.write( "b+c=48/3 = 16 .............(2)\r
\n" ); document.write( "\n" ); document.write( "Add (1) and (2)
\n" ); document.write( "b-c= 8 ..............(1)
\n" ); document.write( "b+c= 16 .............(2)
\n" ); document.write( "2b=24
\n" ); document.write( "2b/2=24/2
\n" ); document.write( "b=12
\n" ); document.write( "Put the value of b in (2)
\n" ); document.write( "b+c=16
\n" ); document.write( "12+c=16
\n" ); document.write( "c=16-12
\n" ); document.write( "c=4\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Speed of boat = b = 12 miles/hour
\n" ); document.write( "speed of current = c = 4 miles/hour\r
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