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)![]() ![]() You can put this solution on YOUR website! 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( " |