It took Ellen 4.5 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 5 hours. Her average speed on Thursday was 4 mph slower than on Wednesday. What was her average speed on Thursday ?
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Home » Mathematics » It took Ellen 4.5 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 5 hours. Her average speed on Thursday was 4 mph slower than on Wednesday.