GMAT Quantitative Reasoning Practice Test 2

First, draw a rectangular axis system and mark the two points.
The easiest way to find the distance between them is to draw a triangle, where the line AB is the hypotenuse. You can see that the length of one side of the triangle is 34.4 − 24.4 = 10 and the other side is 42.49 − 30 = 12.49. The length of the
line AB is received with the help of the Pythagoras principle.