SOLUTION: The elevator in the Washington Monument takes 75 seconds to travel 500 feet to the top floor. What is the speed of the elevator in miles per hour? Give your answer to two signific

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Question 154049This question is from textbook McDougal Littlell Algebra 2
: The elevator in the Washington Monument takes 75 seconds to travel 500 feet to the top floor. What is the speed of the elevator in miles per hour? Give your answer to two significant digits. This question is from textbook McDougal Littlell Algebra 2

Answer by lermgerm52891(1) About Me  (Show Source):
You can put this solution on YOUR website!
There are 3600 seconds in an hour.
There are 5280 feet in a mile.
75seconds | 1 minute | 1 hour | 5280 feet
500 feet | 60 seconds| 60 minutes | 1 mile
All you have to do is multiply across. This shows how you go from seconds to hours and feet to miles. Cross out any labels that are on both top and bottom so you end up with
75 | 1 | 1 hour | 5280
500 | 60 | 60 | 1 mile
Now multiply across on the top and across on the bottom so you end up with
396,000 hour
1,800,000 mile
Reduce your fraction
11
50
You end up with .22 when you divide.
Your answer in two significant digits is .22 miles/hour