Answer
50 mph and 64 mph
Work Step by Step
car 1: 224 = (r+14)*t
car 2: 175 = r*t
$224 = (r+14)*t$
$224/(r+14) = (r+14)*t/(r+14)$
$224/(r+14) =t$
$175 = r*t$
$175/r = r*t/r$
$175/r = t$
$224/(r+14) = 175/r$
$175* (r+14) = 224r$
$175r + 2450 = 224r$
$2450 = 49r$
$2450/49 = 49r/49$
$r = 50$
$14+r$
$14+50$
$64$