Problem Solving

Question

Two cars left Sydney for Melbourne. The first car left at 2pm and averaged 80km/h. The second car left at 3pm and averaged 100km/h. At what time did the two cars meet?

(I can solve it the long was by addition, but I want to know a way that is faster)

Answer 1

t is the time the time the cars meet. THe second car traveled 1 hour LESS.

80t = (100)(t-1)

80t = 100t - 100

-20t = -100

t=5

THey meet at 7 pm