Problema Solution
Two cars leave an intersection. One car travels north, the other east. When the car traveling north had gone 12 mi, the distance between the cars was 4 mi more than the distance traveled by the car heading east. How far had the eastbound car traveled?
Answer provided by our tutors
12^2+x^2=(x+4)^2.
x^2+144=x^2+8x+16.
8x+16=144.
8x=128.
x=128/8.
=16 mi.
The east bound car travelelled 16 miles.