AlgebraHELP!!!!
posted by Molly .
When Amy drives her car to work, the trip takes 1/2 hour. When she rides the bus, it takes 3/4 hour. The average speed of the bus is 12 mph less than her speed driving. Find the distance she travels to work.

Let D be the distance to work.
D=Drivespeed*1/2
D=Busspeed*.75
so Bus*.75=Drivespeed*1/2
but bus=drivspeed12
drivspeed*1/2=(.75)(drivspeed12)
solve for drivespeed, then
distance=drivspeed*1/2