document.write( "Question 1070249: It took Andrea 2.7 hours to drive to her mother's house on Wednesday morning. On her return trip on Thursday night, traffic was heavier, so the trip took her 3 hours. Her average speed on Thursday was 7 mph slower than on Wednesday. What was her average speed on Thursday?\r
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Algebra.Com's Answer #685397 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! It took Andrea 2.7 hours to drive to her mother's house on Wednesday morning. On her return trip on Thursday night, traffic was heavier, so the trip took her 3 hours. Her average speed on Thursday was 7 mph slower than on Wednesday. What was her average speed on Thursday? \n" ); document.write( "-------- \n" ); document.write( "r = speed going \n" ); document.write( "d = 2.7r \n" ); document.write( "--- \n" ); document.write( "d = 3*(r-7) \n" ); document.write( "Solve for r \n" ); document.write( " \n" ); document.write( " |