document.write( "Question 350513: Mr Johnson travelled at 60 km/h for y hours. He used 15 litres of petrol. How much petrol dod he use to travel another 120km? Express your answer in terms of y. \n" ); document.write( "
Algebra.Com's Answer #250536 by mananth(16946)\"\" \"About 
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speed = 60 km/h
\n" ); document.write( "time = y hours
\n" ); document.write( "distance = speed & time
\n" ); document.write( "= 60*y
\n" ); document.write( "60y km.
\n" ); document.write( "For 60y km 15 litres
\n" ); document.write( "1 km 15/60y litres.
\n" ); document.write( "...
\n" ); document.write( "1km 15/60y litres
\n" ); document.write( "120 km the consumption will be 120*15/60y
\n" ); document.write( "=30/y litres
\n" ); document.write( "..
\n" ); document.write( "total consumption = 15 + 30/y litres
\n" ); document.write( "
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