Question 143383
let x=Carla, so x-2=Karen


d=rt __ t=d/r


48 min is 48/60 or 4/5 hr


"It takes Carla 48 minutes less to travel 50 miles than it does Karen"
__ (50/x)+(4/5)=50/(x-2)


multiplying by 5x(x-2) __ 250x-500+4x^2-8x=250x __ subtracting 250x __ 4x^2-8x-500=0


dividing by 4 __ x^2-2x-125=0


use quadratic formula to find x