Problema Solution
two trains leave the same station at the same time but heading in the opposite directions. The first train travels 10 miles per hour faster than the second train. after 6 hours, they are 720 miles apart. at what speeds are the two trains traveling?
Answer provided by our tutors
let east bound train (A) speed =x mph
west bound train(B) speed will be x-20 mph.
..
Distance = speed * time
distance traveled by train A = 5x
distance traveled by train B = 5*(x-20)
..
5x+5(x-20)=900
5x+5x-100 =900
10x=900+100
10x=1000
x=100 mph east bound train
west bound train = 100-20=80 mph