It is 4.5 away from the Y axis and 2.25 away from the X axis.

Solution:
Given PRQ is a triangle.
ST is a line parallel to RQ.



<u>Triangle proportionality theorem,</u>
<em>If a line parallel to one side of a triangle intersects the other two sides, then it divides the two sides proportionally.</em>


Do cross multiplication, we get

Divide by 2x on both sides, we get

1 mile = 1.6km.
so
100 miles x 1.6km = 160.
The number of km between two cities is 160km.