The fastest elevator in the Burj Khalifa can travel 330 feet in 10 seconds. How many feet does the elevator travel in 1 second? 3
3.3
150
33

33

Step-by-step explanation:

A ratio can be used to answer this question.  The equation below shows that you travel 330 feet in 10 seconds on the left side and you are trying to determine how many feet you travel in 1 second on the right side.

330 feet               X feet

      =  

10 seconds           1 second

X is the answer you are looking for.  To solve for X, you use cross multiplication.  Therefore, you have this equation:

10 times X = 330 times 1 or simplified to 10X = 330

To solve for X, you divide both sides of the equation by the number 10.

The left side of the equation becomes 1X or X and the right side becomes 33.

So X (the answer) is 33 feet.