SOLUTION: Two trains leave the station at the same time, one heading west, the other heading east. The westbound train travels at a speed of 100 mph. The east bound train travels at a speed
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Question 1092774: Two trains leave the station at the same time, one heading west, the other heading east. The westbound train travels at a speed of 100 mph. The east bound train travels at a speed of 90 mph. how long will it take the two trains to be 456 mile apart?
D1 = 100*t is the "distance" equation for the first train.
D2 = 90*t is the "distance" equation for the second train.
D1 + D2 = 456 (given) =====>
100t + 90t = 456 ====> (100+90)*t = 456 ====> 190t = 456 ====> t = hours = 2.4 hours = 2 hours and 24 minutes.
