Problema Solution
The speed of a passenger train is 12 mph faster than the speed of a freight train. The passenger train travels 300 miles in the same time it takes the freight train to travel 240 miles. Find the speed of each train.
Answer provided by our tutors
let p and f be speeds
p = f +12
then, time = 300/p = 240/f which gives us f = 240 x p/ 300
so, p - (4/5) p = 12
p = 60mph ... passenger train speed
so, f = 48 mph.. freight train speed