Question

A map distance of 5 inches represents 200 miles of actual distance . Suppose the distance between two cities on the map is 7 inches. What is the actual distance between the two cities? Write the rule you used to find the actual distance.

Answer 1

$\frac{5}{200} = \frac{7}{x} \\ 5x = 1400 \\ x = 280$

therefore, the actual distance is 280 miles. 

(sorry, idk the rule for it)

Answer 2

Use a proportion (5/200 = 7/x) so you would multiply 7 and 200 and divide that answer that by 5 and that's your answer (280 miles)