A word problem,

Question

Yolanda needs to memorize words on the vocabulary list for Korean class. She has memorize 30 of the words, which is 2/3 of the list. How many words are on the list?

Answer 1

Yolanda has memorized 30 words which is 2/3 of the list of words.

Set up an equation relating actual number memorized A to total number available to be memorized M.

A = 2/3 * M.

A is given as 30, so rewrite the equation as 30 = 2/3 * M

Multiply both sides by 3 to get 90 = 2*M

Divide both sides by 2 and solve for M.

90/2 = 2/2 * M ==> 45 = M. The list has 45 words.