document.write( "Question 47820: a motorboat travels 60 kms upstream in 10 hrs if it returns in 8 hrs. . Find th rate of the current and the boat rates are constant during the trip. \n" ); document.write( "
Algebra.Com's Answer #31629 by venugopalramana(3286)\"\" \"About 
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a motorboat travels 60 kms upstream in 10 hrs if it returns in 8 hrs. . Find th rate of the current and the boat rates are constant during the trip.
\n" ); document.write( "LET SPEED OF BOAT IN STILL WATER=B
\n" ); document.write( "SPEED OF WATER=W
\n" ); document.write( "UP STREAM SPEED =B-W
\n" ); document.write( "T=10 HRS....D=60 KM
\n" ); document.write( "10(B-W)=60
\n" ); document.write( "B-W=6................I
\n" ); document.write( "DOWN STREAM SPEED = B+W
\n" ); document.write( "T=8 HRS.....D=60 KM
\n" ); document.write( "8(B+W)=60
\n" ); document.write( "B+W=60/8=7.5.................II
\n" ); document.write( "EQN.I+EQN.II
\n" ); document.write( "2B=13.5
\n" ); document.write( "B=6.75 KMPH
\n" ); document.write( "W=7.5-6.75=0.75 KMPH
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