SOLUTION: Suppose you find yourself in an elevator that is only capable of going up 5 floors at a time or down 7 floors at a time. You are on the 20th floor and you need to get to the 19th f

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Question 711217: Suppose you find yourself in an elevator that is only capable of going up 5 floors at a time or down 7 floors at a time. You are on the 20th floor and you need to get to the 19th floor. The building has 40 floors. How do you get to the 19th floor in this elevator?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
From the 20th floor, go up 5 floors at at time
to the 40th floor ( top floor )
Then go down 7 floors at a time, first to
the 33rd floor, then to the 26th floor, and
then to the 19th floor