Penny is making a model of a Ferris wheel that is 60 feet tall. The model is 15 inches tall. Penny is also making a model of the sky needle ride that is 100 feet tall using the same scale. How tall is the model of
the sky needle?

The model of the sky needle will be 20 inches tall as the scale factor is 4.

Since the Ferris wheel model is in feet and inches, bring both measurements to inches, then divide the total height of the Ferris wheel by the height of the model, then you multiply the height of the sky needle ride by the quotient of the height of the Ferris wheel and the model of the Ferris wheel to get 7 inches

7.666270253x10 raised to the 18th power

The answer would be 13.5 minutes.