Two large containers each contain the same amount of juice. When 54oz. of the first container are poured into the second container, the second container has 4 times as much juice as the first container. How many ounces of juice did the first container originally have?

2 answers

at start:
container A has x oz
container B has x oz

after pouring:
container A has x-54
container B has x+54

x+54 = 4(x-54)
x+54 = 4x - 216
-3x = -270
x = 90

check:
90-54 = 36
90+54 = 144

IS 144 equal to 4 times 36 ? YEAh
i dont get it