PLEASE HELP ME I AM STUCK PLEASE PLEASE PLEASE
I'm guessing its 18.This is because:3 oz = 1/66 oz = 2/69 oz = 3/618 oz = 6/6.I wouldn't go with my answer straight away; wait for someone lese to agree with me. I'm taking a good guess :)
3 oz - 1/6x oz - 1x=13/(1/6)x=36x=18