On a normal day, i can walk from my house to school in three-quarters of an hour. the return trip takes me the same amount of time. my mom, driving our car, covers that distance in about a quarter of the time that it takes me. if i go to school five days a week and there are thirty-seven weeks in the school year, how many hours would i save every year if my mom agreed to drive me to and from school? give your answer as a mixed number.