A scuba diver started her dive at 2{:}42 \text { p. M.}2:42 p. M.2, colon, 42, start text, space, p, point, m, point, end text and finished diving at 3{:}17 \text { p. M.}3:17 p. M.3, colon, 17, start text, space, p, point, m, point, end text How long did the dive last?