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prealgebra intermediate

Problem

Marguerite drove 100 miles in 2.4 hours. If Sam drove for 3 hours at the same average rate as Marguerite, how many miles did he drive?
Solution
We have that Marguerite drove in . We are told that this proportionality applies to Sam as well. So, if Sam drove for he must have traveled , or
Final answer
125\textnormal{ miles}