document.write( "Question 384357: Bert is 18 km away from Brenda. Both begin to walk toward each other at the same time. Bert walks 2 km per hour. They meet in 4 hours. How fast is Brenda walking? \n" ); document.write( "
Algebra.Com's Answer #272081 by mananth(16946)\"\" \"About 
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Bert is 18 km away from Brenda. Both begin to walk toward each other at the same time. Bert walks 2 km per hour. They meet in 4 hours. How fast is Brenda walking?\r
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\n" ); document.write( "distance = 18 km
\n" ); document.write( "bert speed 2 km/h
\n" ); document.write( "Brenda x km/h
\n" ); document.write( "time they meet = 4 hours.
\n" ); document.write( "..
\n" ); document.write( "they are walking towards each other
\n" ); document.write( "So add up their speeds
\n" ); document.write( "combined speed = x+2 km/h
\n" ); document.write( "..
\n" ); document.write( "t=d/r
\n" ); document.write( "t=18/(x+2)=4
\n" ); document.write( "multiply by (x+2)
\n" ); document.write( "18=4(x+2)
\n" ); document.write( "18=4x+8
\n" ); document.write( "-8
\n" ); document.write( "18-8 = 4x
\n" ); document.write( "10 = 4x
\n" ); document.write( "/4
\n" ); document.write( "10/4=x
\n" ); document.write( "x=2.5 km/h Brenda's speed
\n" ); document.write( "..
\n" ); document.write( "m.ananth@hotmail.ca.\r
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