It will take an hour for plane A to meet plane B which is flying towards it. If, within 45 minutes, the distance between them will be 200 miles, how far apart are they now?

1 answer

they are d miles apart at the start

Va + Vb = V

V(1) = d

V(3/4) = d-200
d(3/4) = d - 200
200 = d/4
d = 800