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The scale of a map says that 4 cm means 5 km but what in centimeters would be 4 km

The scale of a map says that 4 cm means 5 km but what in centimeters would be 4 km
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The scale of a map says that 4 cm means 5 km but what in centimeters would be 4 km

User Mathijs Flietstra
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\begin{array}{ccll} cm&km\\ \cline{1-2} 4 & 5\\ x& 4 \end{array} \implies \cfrac{4}{x}~~=~~\cfrac{5}{4} \implies 16=5x\implies \cfrac{16}{5}=x\implies 3.2=x

User Lannyf
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