Math in Daily Life: Walking to Work
In order to get to work everyday, I drive my car on the highway. First, from home, I drive North for 4 miles. Then I turn right and drive for 5 miles. On average, I drive 30 mph the whole way. (Because of the daily rush hour.)
Later, a new subway was just finished, and provides an easier and quicker way for me to get to work. However, I have to walk to the newly constructed subway station. I bike on average 22 feet per second. The distance from the subway station to the intersection where I would usually turn right if I was driving my car is 19800 feet. The subway train runs 30 mph on average, and makes 1 minute stops at each station. There are 4 stations in-between the station I get on the subway train and the station I get off of to go to work.
Is taking the subway to work faster than driving my car to work? If so, by how many seconds?
Do not include the time used in-between to start the car, walk into the station and train, walk to work, turn the car, back out of the driveway, etc.
Nothing special is going on.
Average speed is consistent throughout the ride to work.