jaidee left the mall and traveled toward the dump at an average speed of 48 km/h. john left two hours later but with an average speed of 80 km/h. find the number of hours jaidee traveled before john caught up. show your equation.

distance = speed * time, so the distances are equal when

48t = 80(t-2)
t = 5 hours

check:
48*5 = 240
80*3 = 240

That dump is way way out of town!