Question 1172979
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The first train travels for 2:30 at 90 mph before the second train starts, traveling 90(2.5) = 225 miles in that time.  The remaining distance between the two trains is 4215-225 = 3990 miles.<br>
When the two trains are both moving, they are closing the distance between them at a rate of 90+120 = 210 mph.<br>
The number of hours required for them to travel the 3990 miles that remain before they meet is 3990/210 = 19.<br>
ANSWER: The two trains will pass each other 19 hours (5 hours less than a full day) after the second train started, at 5:45 pm the next day.<br>
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NOTES for tutor ewatrrr....<br>
(1) The question you answered is not at all the question that was asked....
(2) please turn off your special font type and color at the end of your responses so it doesn't carry over to the responses from other tutors<br>