Question 118809
Distance(d) equals rate(r) times Time(t) or d=rt; r=d/t and t=d/r

Let t=number of hours that has elapsed when they are 69 miles apart

In t hours car-1 travels 32*t miles
In t hours car-2 travels 47*t miles

Now we are told that:
 47t-32t=69 collect like terms

15t=69  divide both sides by 15
t=4.6 hr------------------------------ans

CK
47*4.6-32*4.6=69
216.2-147.2=69
69=69


Hope this helps---ptaylor