Charlene takes the bus to work in the morning, then walks home for lunch, walks back to work, and finally walks home in the evening. the distance one way is 600 meters. how far does she walk each day between home and work?

Taking the bus to work in the morning is one time
walking home for lunch is 2 times
walking back to work after lunch is 3 times
and walking home in the evening is 4 times.
4 times walking/riding one way(either to work or home) multiplied by a 600 meter distance each time equals 2400 meters in all, or 2.4 kilometers.