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Michael is training for a 10 mile race. During the first week, he runs 2 miles. Each week he runs one and a half times what he ran the previous week. If he only runs once a week, how many total miles has he run by the 5th week?

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10.125 miles because you multiply two by 1.5 which is three and then multiply three by 1.5 which is 4.5 and so on.

User Elfxiong
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