How long did it take Betty to drive nonstop on a trip from her home to Denver, Colorado.
1 If Betty's average speed for the trip had been 1 1/2 times as fast, the trip would have taken two hours.
This is supposed to be enough.
The explanation states that Betty's driving rate is 3/2R.
I don't understand how this would translate to 2/3t for distance.
How do you get 2/3 for distance?
Suppose the distance is d and the average speed is v. We need to find d/v and we are given that d/(3v/2)=2. We can find d/v by multiplying both sides of the equation by 2/3