SOLUTION: A freight train travels at 30 mph. If the freight train is 300 miles ahead of an express train traveling at 55 mph, how long will the express train take to overtake the freight t

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Question 1074064: A freight train travels at 30 mph. If the freight train is 300 miles ahead of an express train traveling at 55 mph,
how long will the express train take to overtake the freight train?
Which equation could be used to find the number of miles the trains will travel?
30x = 55(x + 300)
x÷30 = (x - 300)÷55
x÷30 = (x + 300)÷55
Answer by ikleyn(52824) About Me  (Show Source):
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A freight train travels at 30 mph. If the freight train is 300 miles ahead of an express train traveling at 55 mph,
how long will the express train take to overtake the freight train?
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Answer. t = 300%2F%2855-30%29 = 300%2F25 = 12 hours. 

Which equation could be used to find the number of miles the trains will travel?

30x = 55(x + 300)             No

x÷30 = (x - 300)÷55           No

x÷30 = (x + 300)÷55           Yes (x stands for the freight train)

See the lessons
- Travel and Distance problems
- Travel and Distance problems for two bodies moving in the same direction (catching up)
in this site.