Acarpenter earns $256 working on a 4-hour repair job. the next repair jobs, billed at the same rate, are a 3-hour job followed by a 2-hour job. how much does the carpenter earn for the three jobs together?

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters