document.write( "Question 937164: On Saturday, Erica and Bianca travel 324 km. They reach their destination in 4 hours. What is their average speed?\r
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Algebra.Com's Answer #570581 by MathLover1(20855)\"\" \"About 
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recall: \"d=s%2At\" where \"d=distance\", \"s=speed\", and \"t=time\"
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\n" ); document.write( "\n" ); document.write( "if they travel \"d=324km\" in \"t=4h\", then we have\r
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\n" ); document.write( "\n" ); document.write( "\"324km=s%2A4h\"\r
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\n" ); document.write( "\n" ); document.write( "\"324km%2F4h=s\"\r
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\n" ); document.write( "\n" ); document.write( "\"cross%28324%2981km%2Fcross%284%29h=s\"\r
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\n" ); document.write( "\n" ); document.write( "\"s=81%28km%2Fh%29\"
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