FRACTIONS HELP PLEASE

Question

if you place one full container of flour on one pan of a balance scale and a similar container 3/4 full and a 1/3-pound weight on the other pan, the pans balance. How much does the full container of flour weigh

Answer 1

Let w = wt of the bag

(1/3) lb + wt of (3/4) bag = wt of the whole bag, in math terms

(1/3) + (3/4)w = w

(1/4)w = 1/3

w = 4/3(1 1/3) lbs