Question

the scale map is 1in:50 mi. The actual distance between the 2 cities is 350 miles. What is the distance in between the cities on the map

Answer 1

Let's look at the ratio. X will be the distance between the cities on the map that we're trying to find.
1 in:50 mi
X in:350 mi
What you do to one side, you have to do to the other. With the actual distance, we hav to see what the scale was multiplied by.
350÷50= 7
It was multiplied by 7. Let's multiply the other side of the ratio by 7.
1×7= X= 7
So, the distance between the cities on the map is 7 inches.

Answer 2

Write and solve an equation of ratios:

1 in 50 mi
--------- = ----------
x 350 mi

Then 50x=350, and x = 7 (inches)