Question

car a leaves phoenix heading north at a constant speed of 40mph car b leaves two hours later and follows car a at a constant speed of 54 mph how many hours does it take car b to catch up to car a? algebra

Answer 1

in the first 2 hours, A moved 80 miles.

B is going 14 mi/hr faster than A.

So, it takes 80/14 hours to catch up.