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Answer:

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Step-by-step explanation:

Let speed of the 1ST TRIP x miles / HR. and speed of the 2nd trip 3x / hr.

We KNOW that

Speed = Distance/Time.

Or, Time = Distance/Speed.

So, TIMES taken to covered a distance of 50 miles on his first trip = 50/x hr.

And times taken to covered a distance of 300 miles on his later trip = 300/3x hr.

= 100/x hr.

So we can clearly see that his new time compared with the old time was: twice as much.


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