SOLUTION: A person is riding a Ferris wheel with a circumference of 204 feet. If a ride all the way around the circle takes 90 seconds, how fast is the rider traveling in miles per hour?

Algebra ->  Finance -> SOLUTION: A person is riding a Ferris wheel with a circumference of 204 feet. If a ride all the way around the circle takes 90 seconds, how fast is the rider traveling in miles per hour?       Log On


   

Question 1170441: A person is riding a Ferris wheel with a circumference of 204 feet. If a ride all the way around the circle takes 90 seconds, how fast is the rider traveling in miles per hour?


Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!
feet per second is abbreviated ft/s
miles per hour is abbreviated mi/h
minutes is abbreviated min
Don't confuse mi and min.



Cancel the units that cancel:

Cancel the feet:



Cancel the seconds:



Cancel the minutes:



Multiply across the top, and across the bottom to make one fraction:



matrix%281%2C2%2C734400%2Cmi%29%2Fmatrix%281%2C2%2C475200%2Ch%29

matrix%281%2C2%2C734400%2F475200%2Cmi%2Fh%29

To reduce the fraction, divide top and bottom by 43200:

matrix%281%2C2%2C17%2F11%2Cmi%2Fh%29

Make that into a mixed fraction:

matrix%281%2C2%2C1%266%2F11%2Cmi%2Fh%29 

Or, approximate as a decimal rounded to hundredths

matrix%281%2C2%2C1.55%2Cmi%2Fh%29

Edwin