Answer:
C
Step-by-step explanation:
7.67 is greater than 7.66666...
The two trains will meet when the sum of the distances covered by the two trains is 504 miles.
distance = speed x time.
Let the time covered when they meet be x, then:
80x + 100x = 504
180x = 504
x = 504/180 = 2.8.
Therefore, the two trains will meet in 2 hours 48 mins.
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