document.write( "Question 920377: a ferry boat is traveling at 90 km in 45 minutes. what is the average speed of the boat in km/h?
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Algebra.Com's Answer #558331 by srinivas.g(540)\"\" \"About 
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distance = 90 km
\n" ); document.write( " time = 45 minutes
\n" ); document.write( "speed = distance over time
\n" ); document.write( " = 90/45
\n" ); document.write( " = 2 km per minute\r
\n" ); document.write( "\n" ); document.write( " speed = 2 km per minute
\n" ); document.write( "it means it can travel 2 km in one minute
\n" ); document.write( " In an hour ( i.e 60 minutes ) it can travel = 2 km *60
\n" ); document.write( " = 120 km
\n" ); document.write( "so speed of the boat = 120 km per hour
\n" ); document.write( " =120 kmph
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