Matt has 3/4 of an hour to decorate cupcakes. it takes him 1/8 of an hour to decorate each cupcake, how many cupcakes can he decorate? please please please help me​

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?