Question 541066
"Train A has a speed 15 miles per hour greater than that of train B" ___ A = B + 15 ___ A - 15 = B


t = d / r ___ the times are the same (equal)


240 / A = 195 / B ___ 240 / A = 195 / (A - 15)


"cross" multiplying ___ 240A - 3600 = 195A ___ 45A = 3600


solve for A and then substitute back to find B