There are 3840 chickens, ducks and geese in a farm. Among them, chickens are twice as many as ducks, ducks are five times as many as geese, and how many are the three kinds of poultry?
Geese = 3840 (1 + 5 + 2 × 5) = 240
Ducks = 240 × 5 = 1200
Chicken = 1200 × 2 = 2400