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If it takes 5 identical firetrucks 5 minutes to pump 5 kiloliters of water onto a fire, how long will it take 8 firetrucks pump 8 kiloliters? Hint: the answer isn't 8 minutes.

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Two right triangles \(ABC\) and \(DEF\) in the above figure are similar, where the corresponding side of \(\overline{AB}\) is \(\overline{EF}.\) If \(\lvert{\overline{AC}}\rvert=3,\) \(\lvert{\overline{AB}}\rvert=4\) and \(\lvert{\overline{DE}}\rvert=l=18,\) what is the length of \(\overline{EF}?\)

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