document.write( "Question 157259: An ambulance averaged 36 km/h going to an accident and 48 km/h on its return to the hospital. If the total time for the round-trip was 40 mins, including 5 min at the accident scene, how far from the hospital was the accident? \n" ); document.write( "
Algebra.Com's Answer #115947 by checkley77(12844) ![]() You can put this solution on YOUR website! d/36+d/48=(40-5)/60 \n" ); document.write( "(4d+3d)/144=35/60 \n" ); document.write( "7d*60=144*35 \n" ); document.write( "420d=5040 \n" ); document.write( "d=5040/420 \n" ); document.write( "d=12 miles for each trip. \n" ); document.write( "Proof \n" ); document.write( "12/36+12/48=35/60 \n" ); document.write( "1/3+1/4=7/12 \n" ); document.write( "(4+3)/12=7/12 \n" ); document.write( "7/12=7/12 \n" ); document.write( " \n" ); document.write( " |