One travels due north at a speed of 18 mph, the other travel at a speed of 24 mph. How long until the distance between them is 120 miles?

Question

speed of 18 mph, speed of 24 mph distance between them is 120 miles

 

Answer 1

time x rate = distance, the times are the same

 

120 = 18mph(x hr) + 24mph(x hr)

120 = 18x + 24x

120 = 42x

2.86 hours = x