Problema Solution
Two trains are 444 miles apart, and their speeds differ by 15 mph. Find the speed of each train if they are traveling toward each other and will meet in 4 hours.
Answer provided by our tutors
let 'x' represent the velocity of the slower train, then 'x+15' represents the velocity of the faster train and they relative velocity, since they are travelling directly at each other, is the sum of their velocities, or '2x+15'
distance = speed * time
speed = distance / time
444/4 = 2x+15
solving for 'x' we have x =48
48+15 = 63
the slower train is travelling at 48 mph and the faster train is travelling at 63 mph