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There are 72 chickens, ducks and geese in Liangliang's family, of which the number of chickens accounts for 4 / 9, and the ratio of ducks to geese is 4:1 There are 72 chickens, ducks and geese in Liangliang's family. The number of chickens accounts for 4 / 9 of them. The ratio of ducks to geese is 3:2. How many ducks and geese are there?
Ducks and geese = 72 × (1-4 / 9) = 40;
Ducks = 40 × 3 (3 + 2) = 24;
Geese = 40-24 = 16
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