If x + X + X + y + y = 54, x + X + y + y = 56, then x=______ ，y=______ ．

If x + X + X + y + y = 54, x + X + y + y = 56, then x=______ ，y=______ ．

Because x + X + X + y + y = 54, x + X + y + y = 56, 2, 1 × 2 - 2 × 3, 6x + 4y-6x-9y = 108-168, 5Y = 60, y = 12; because x + X + X + y + y = 54, 3x = 54-24, x = 10

X=2-45-56-56

X=2-（45+56+56）=2-157=-155

Grandfather Liu has 160 ducks, and the number of chickens is 8 / 5 of ducks. How many more ducks are raised than chickens?

You may have written the question wrong. It should be that the number of chickens is 5 / 8 of that of ducks. In this way, the number of ducks is three eighths more than that of chickens, that is, 160 times three eighths equals 60, that is, the number of ducks is more than that of chickens

Uncle Zhang's ratio of chickens to ducks is 5:2. If he raises 200 chickens, how many more chickens are there than ducks

120