when a Ferris wheel casts a 20-meter shadow, a man 1.8 meters tall casts a 2.4-meter shadow. How tall is the Ferris wheel?
1.8 / 2.4 = x / 20 where x is the height of the Ferris Wheel [in meters ]
cross-multiply
20 (1.8) = 2.4 x
36 = 2.4 x divide both sides by 2.4
15 = x
