SOLUTION: A truck completes a 10 mile trip in 20 minutes. If it does one half the distance at a speed of 20 miles per hour, then it's speed for the remainder of the distance must be how many

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Question 865931: A truck completes a 10 mile trip in 20 minutes. If it does one half the distance at a speed of 20 miles per hour, then it's speed for the remainder of the distance must be how many mph?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

5mi%2F20mph+%2B+5%2Fx+=+%281%2F3%29hr   |Multiplying thru by 60x so as all denominators = 1

   15x + 300 = 20x

        300 = 5x

        60mph = x

CHECKING our answer***

5%2F20+%2B+5%2F60+=+1%2F4+%2B+1%2F12+=+1%2F3

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