Two trains leave the same station at the same time, but are headed in opposite directions. One train travels at 70 mph and the other train travels at 80 mph. How much times passes until the trains are 600 mi apart?

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Question

Two trains leave the same station at the same time, but are headed in opposite directions. One train travels at 70 mph and the other train travels at 80 mph. How much times passes until the trains are 600 mi apart?

Question 4 options:
	
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4

	
5

mathstudent55 · Answer

Since the trains travel in opposite directions, the speed at which they distance themselves is the sum of the speeds.

mathstudent55 · Answer

Start by adding the speeds.
Then using the sum of speeds as the new speed, how long dopes it take to travel 600 miles at the new speed?

mathstudent55 · Answer

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