document.write( "Question 1203582: On a shopping trip, Marge drove 3 km at 60 km/h, 5 km at 120 km/h and 3 km at 40 km/h/ Her average speed for the whole trip was \n" ); document.write( "
Algebra.Com's Answer #839251 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\"Average_speed+=+total_distance%2F+total_time\"\r
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\n" ); document.write( "\n" ); document.write( "total distance=\"3km%2B5km%2B3km=11km\"\r
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\n" ); document.write( "\n" ); document.write( "\"time=distance%2Fspeed\"\r
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\n" ); document.write( "\n" ); document.write( "\"Average_speed+=+11km+%2F+%281%2F6%29h=66%28km%2Fh%29+\"\r
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