Andrew M. answered • 09/09/17

Tutor

New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors

Distance = rate*time ... d=rt

Thus: t = d/r

If Dana's rate is r, Chuck's rate is r+4:

Chuck: t = 208/(r+4)

Dana: t = 192/r

208/(r+4)=192/r

208r = 192(r+4)

208r = 192r + 768

16r = 768

r = 768/16 = 48 mph

Chuck = r+4 = 52 mph