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)\"\" \"About 
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.
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