Question

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

Answer 1

Okay, so if 30 words it 2/3, we need to find how many words are in each 1/3.

30 divided by 2 (Since there are two thirds) = 15 words. 15 words in each of those 1/3

So since each 1/3 has 15 words, and 30 words is 2/3, there us 1/3 still left. So add that 1/3 (15) to 30. 30+15=45. So, there are 45 words on the list.
Hope I helped :)

Answer 2

Set it up as a proportion
2/3=30/x

Then cross multiply to solve for x