Question

two trains are 550 miles apart heading toward each other on parallel tracks. Train A is traveling east at 35 miles per hour, while train B travels west at 45 miles per hour. When will the trains meet each other in their respective tracks?

Answer 1

Answer:

6 ⅞ hours later

Or, 6 hours 52.5 minutes later

Step-by-step explanation:

Combined speed = 35+45 = 80

550/time = 80

time = 6 ⅞ hours later

Answer 2

Answer: they would meet after 6.875 hours.

Step-by-step explanation:

By the time both trains meet, they would have covered a total distance of 550 miles.

Let t represent the time it will take both trains to meet.

Distance = speed × time

Train A is traveling east at 35 miles per hour. Distance covered by train A after t hours is 35t

Train B travels west at 45 miles per hour. Distance covered by train B after t hours is 45t

Since total distance covered is 550 miles, it means that

35t + 45t = 550

80t = 550

t = 550/80

t = 6.875 hours