A roller coaster casts a shadow that is 40 feet long. If a 5.25 feet tall person casts a 3-foot shadow, how tall is the roller coaster?

Answer 1

set up proportion:

height roller coaster 5.25 ft

--------------------------- = ---------

40 ft shadow 3 ft shadow

height roller coast = 5.25 * 40 /3 = 70 feet