Deon needs to memorize words on a vocabulary list for korean class. he has memorized 30 of the words, which is two-thirds of the list. how many words are on the list?

45 words.  This must be the case because if we use the equation a=pw then we find that our new equation is 30=•w.  We then find what w, or whole, is equal to and divide a by p.  The answer is then 45.