Two airplanes leave St. Louis at the same time and fly in opposite directions. If one travels at 500 kilometers per hour, and the other at 600 kilometers per hour, how long will it take for them to be 1925 kilometers apart?

2 answers

(500 + 600)h = 1925

Solve for h.
(500+600)h=1925
500h+600h=1925
1100h=1925
1100h/1100=1925/1100
h=1.77