document.write( "Question 977494: On a trip to the mountains, Ms. Jacobs drove her car at an average rate of 50 km/hr. Due to the bad road conditions, the return trip took 3 hours longer, and she averaged only 30 km/hr. Find out how much time she spent driving home. \n" ); document.write( "
Algebra.Com's Answer #599042 by richwmiller(17219)\"\" \"About 
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50t=30(t+3)
\n" ); document.write( "50t=30t+90
\n" ); document.write( "20t=90
\n" ); document.write( "2t=9
\n" ); document.write( "t=4.5
\n" ); document.write( "4.5+3=7.5 hours to return home\r
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