document.write( "Question 1070457: It took Cathy 1.8 hours to drive to her​ mother's house on Monday morning. On her return trip on Tuesday ​night, traffic was​ heavier, so the trip took her 2 hours. Her average speed on Tuesday was 7 mph slower than on MondayMonday. What was her average speed on Tuesday​? \n" ); document.write( "
Algebra.Com's Answer #685554 by josgarithmetic(39616)\"\" \"About 
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document.write( "               SPEED        TIME        DISTANCE\r\n" );
document.write( "GOING           r            1.8          d\r\n" );
document.write( "RETURN          r-7          2            d\r\n" );
document.write( "
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\n" ); document.write( "\n" ); document.write( "d is distance both ways, the same for each.
\n" ); document.write( "\"r%2A1.8=%28r-7%29%282%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"1.8r=2r-14\"\r
\n" ); document.write( "\n" ); document.write( "\"0.2r=14\"\r
\n" ); document.write( "\n" ); document.write( "\"r=14%2F%280.2%29\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28r=70%29\"------Monday, going to.\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28r-7=63%29\"------Tuesday, returning from.
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