Jeff’s mom asks him to water the grass before he leaves at 9:50 a. m. for swim practice. There are five locations that require different sprinkler settings, and each location requires 25 minutes of water. Jeff assumes it will take him no more than 2 minutes to change the sprinklers, which must be done for 4 locations. What is the latest time that Jeff can start watering and still be ready to leave for swim practice at 9:50 a. m.?