There were 242 inmates in a certain cell block at the beginning of the day. At 9:00 a.m., 116 inmates were checked out to a recreational program. At 9:15, 36 inmates were checked out to an educational program. At 9:30, 78 inmates were checked out on a work detail. By 10:15, the only inmates who had returned were 115 inmates who had been checked back in from the recreational program. A count made at 10:15 should show that the number of inmates present in the cell block is