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Jack and Jill are going swimming at a pool that is one mile from their house.They leave home simultaneously.Jill rides her bicycle to the pool at a constant speed of 10 miles per hour.Jack walks to the pool at a constant speed of 4 miles per hour.How many minutes before Jack does Jill arrive?( ?。?br />Jack和Jill要去他們家一英里外的游泳池游泳。他們同時離家出發(fā)。Jill騎自行車以每小時10英里的恒定速度到游泳池。Jack以每小時4英里的恒定速度走到游泳池。Jill比Jack早到達多少分鐘?( ?。?/div>
   
【考點】簡單行程問題
【答案】D
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發(fā)布:2024/9/7 5:0:8組卷:2引用:2難度:0.5
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