GMAT Quantitative Reasoning Practice Test 1

Draw a diagram to show the path of the truck.
The distance between the starting point and the final destination is a diagonal line. This line is the hypotenuse of a right triangle that has one leg of 40 and the other measuring 30 .Use the Pythagorean theorem: a2+b2=c2. Recall, however, that this is a multiple of the most common Pythagorean triple (3,4,5) - namely, 30,40,50. The distance is 50 miles.