Y YELLA New member Joined Feb 28, 2011 Messages 2 Feb 28, 2011 #1 An express bus travels 320 miles in the same amount of time that a car travels 280 miles. The rate of the car is 8mph less than the rate of the bus. Find the rate of the bus

An express bus travels 320 miles in the same amount of time that a car travels 280 miles. The rate of the car is 8mph less than the rate of the bus. Find the rate of the bus

G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,216 Feb 28, 2011 #2 Note the problem says their times are the same. So, since d=rt, then t=d/r So, we equate these. \(\displaystyle \frac{320}{r}=\frac{280}{r-8}\) EDIT: LaTex is not working. So, we have: 320/r=280/(r-8) solve for r.

Note the problem says their times are the same. So, since d=rt, then t=d/r So, we equate these. \(\displaystyle \frac{320}{r}=\frac{280}{r-8}\) EDIT: LaTex is not working. So, we have: 320/r=280/(r-8) solve for r.