SOLUTION: Johnny left his office and took the elvator down 4 floors to the cafeteria. He then went up 21 floors to the meeting on the 28th floor. Where is Johnny's office located ?

Question 540697: Johnny left his office and took the elvator down 4 floors to the cafeteria. He then went up 21 floors to the meeting on the 28th floor. Where is Johnny's office located ?
Found 2 solutions by oberobic, josmiceli:
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
J = Johnny's floor
.
J-4 = cafeteria's floor
.
J-4+21 = 28
.
J = 28 +4 -21 = 11
.
Johnny's floor is the 11th floor.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Johnny's floor
given:
= cafeteria
= meeting at 28th floor

He is on the 11th floor
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