a train travels from albany to syracuse , a distance of 100 miles , at the average rate of 50 miles per hour . the train then travels back to albany from syracuse . the total travelling time of the train is 5 hours and 24 minutes . what was the average rate of speed of the train on the return trip to albany ?
"50 * t = 100 therefore t = 100 / 50 = 2 on return speed * ( 5.4 - 2 ) = 100 therefore t = 100 / 3.2 = 31.25 a"
speed(100, subtract(add(5, divide(24, const_60)), divide(100, 50)))