Atotal of 8 classes each with 20 students will go on the field trip two chaperones are needed for each class one bus will hold 25 people how many buses will be needed

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?