document.write( "Question 717185: what is the average speed of a car if the car travels 214 km in 4 hours and 45 minutes \n" ); document.write( "
Algebra.Com's Answer #440135 by jndarrell(58)![]() ![]() ![]() You can put this solution on YOUR website! 4 hours and 45 minutes is = to 4.75 (45minutes is 3/4 of an hour which equals 0.75)\r \n" ); document.write( "\n" ); document.write( "Proportion set up:\r \n" ); document.write( "\n" ); document.write( "214km over 4.75hrs is = to 'x'km/1hr (Keep your units matching, km on top on both side and hours on bottom of both sides or vice versa) \n" ); document.write( "CROSS MULTIPLY \n" ); document.write( "214=4.75x \n" ); document.write( "DIVIDE BOTH SIDES BY 4.75 to get 'x' alone \n" ); document.write( "x=45.05km/hr (rounded to the hundreth)\r \n" ); document.write( "\n" ); document.write( "Check your instructions for guidance on rounding, and don't forget to put your units. \n" ); document.write( " |