A pole casts a shadow 20 feet long . Anothe pole 3 feet high cast a shadow 5 feet long. If the heights and shadows are in proportion, how high is the first pole?
Would be 33.3 because 5/3 is 1.6666667 and 20*1.6666667 is 33.3!
(psst, there is more 3's after the 33.3)