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On a map, 1 inch equals 10.4 miles. if two cities are 1.5 inches apart on the map, how far are they actually apart?

User Parnell
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The ratio between the map and the real distance is given at first: 1 inch to 10.4 miles.

If we want to know the real distance that is represented as 1.5 inches in the map, we can use the rule of three:

1 inch --- 10.4 miles

1.5 inches --- x miles

So, we can put an equal sign to get:


\begin{gathered} (1)/(1.5)=(10.4)/(x) \\ 1\cdot x=1.5\cdot10.4 \\ x=15.6 \end{gathered}

So, the two cities are 15.6 miles apart.

User Evgeniy
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