Two trains arrived at a station at 2: 55 p. m., with one arriving on track a, and the other arriving on track b. trains arrive on track a every 16 minutes, and they arrive on track b every 18 minutes. at what time will trains next arrive at the same time on both tracks? a) 4: 07 p. m. b) 5: 19 p. m. c) 6: 31 p. m. d) 7: 43 p. m.