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哪位大侠帮我解答看下这道数学题到底啥意思了 谢了
if a motorist had driven 1 hour longer on a certain day and at an anverage rate of 5 miles per hour faster, he would have covered 70 more miles than he actually did. How many more miles would he have covered than he actually did if had driven 2 hours longer and at an average rate of 10 miles per hour faster on that day? |
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