document.write( "Question 1005428: John travelled by car to visit his aunt in Edinburgh. the journey of 18 kilometres took 4hr 9 minutes. what was the average speed?Give your answer in kilometres per hour \n" ); document.write( "
Algebra.Com's Answer #621719 by Bob10576(4)![]() ![]() ![]() You can put this solution on YOUR website! The question asks for your answer in kilometers per hour.\r \n" ); document.write( "\n" ); document.write( "kilometers per hour can also be written as \r \n" ); document.write( "\n" ); document.write( "kilometers/hour\r \n" ); document.write( "\n" ); document.write( "now replace kilometers with the given value of kilometers and the hours with the given value of hours\r \n" ); document.write( "\n" ); document.write( "but, since the given value of hours isn't completely in hours we have to convert it.\r \n" ); document.write( "\n" ); document.write( "a way to do this is to take the extra minutes and divide them by 60. this will give you the equivalent of 9 minutes in hours.\r \n" ); document.write( "\n" ); document.write( "9/60 = .15\r \n" ); document.write( "\n" ); document.write( "now we add .15 hours to our original 4 hours and plug it into the equation we made before. \n" ); document.write( "4+.15 = 4.15 \r \n" ); document.write( "\n" ); document.write( "18/4.15 = km/h\r \n" ); document.write( "\n" ); document.write( "thus 4.337km/h is your answer. \n" ); document.write( " |