document.write( "Question 557375: A car traveled at 50km/hr for 4 hours and at 60km/hr for 3 1/2hours. What was the average speed for the whole journey? \n" ); document.write( "
Algebra.Com's Answer #362649 by ankor@dixie-net.com(22740)\"\" \"About 
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A car traveled at 50km/hr for 4 hours and at 60km/hr for 3 1/2hours. What was the average speed for the whole journey?
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\n" ); document.write( "Average speed = total distance/total time
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\n" ); document.write( "a = \"%28%2850%2A4%29%2B%2860%2A3.5%29%29%2F%284%2B3.5%29\"
\n" ); document.write( "a = \"%28200%2B210%29%2F%287.5%29\"
\n" ); document.write( "a = 54\"2%2F3\" km/hr, average speed for the trip
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