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Tara can type 180 words in 4 minutes.At this rate, how many words can she type in 10 minutes

Tara can type 180 words in 4 minutes.At this rate, how many words can she type in 10 minutes
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Tara can type 180 words in 4 minutes.At this rate, how many words can she type in 10 minutes

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User Brian Schermerhorn
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\begin{array}{ccll} words&minutes\\ \cline{1-2} 180 & 4\\ w& 10 \end{array} \implies \cfrac{180}{w}~~=~~\cfrac{4}{10} \\\\\\ \cfrac{180}{w} ~~=~~ \cfrac{2}{5}\implies 900=2w\implies \cfrac{900}{2}=w\implies 450=w

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User Mitch Satchwell
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