document.write( "Question 251115: a man made a trip of 275 miles in 8 hours. before noon, he averaged 40mph , and after noon he averaged 25 pmh. at what time did he begin his trip ? \n" ); document.write( "
Algebra.Com's Answer #182856 by checkley77(12844)\"\" \"About 
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D=RT
\n" ); document.write( "275=40X+30(8-X)
\n" ); document.write( "275=40X+240-30X
\n" ); document.write( "10X=275-240
\n" ); document.write( "10X=35
\n" ); document.write( "X=35/10
\n" ); document.write( "X=3.5 HOURS FOR THE 40 MPH TRIP.
\n" ); document.write( "8-3.5=4.5 HOURS FOR THE 30 MPH TRIP.
\n" ); document.write( "12:00-3:30=8:30 IS THE TIME OF THE BEGINNING OF HIS TRIP.
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