Two trains running on parallel tracks are 600 miles apart. one train is moving east at a speed of 90 miles per hour, while the other is moving west at 75 miles per hour. how long will it take for the two trains pass each other?

Remark

The trick here is to realize that between them they will cover 600 miles

Train one

r = 90 mph

t = ?? [same for both trains]

d = d1

Train Two

r = 75 miles / hour

t = ?? [same for both trains]

d = d2

Equation.

basically d = r*t

d_train1 + d_train2 = total_distance

90*t + 75*t = 600

Combine and solve

165t = 600 Divide by 165

t = 600/165

t = 3.64 hours <<<<<< Answer

step-by-step explanation:

a and d