The speed of a passenger train is 16 mph faster than the speed of a freight train. the passenger train travels 310 miles in the same time it takes the freight train to travel 230 miles. find the speed of each train.
Let n be the speed of the freight train; and n+16 be that of the passenger train. Then: 310/n+16=230/n 310n=230n+3680 n=46 mph as the speed of the freight train; and 62 mph as the speed of the passenger train ☺☺☺☺