Uncle Li's family has 42 chickens, half of which are ducks. How many chickens and ducks do Uncle Li's family raise?
42 + 42 △ 2 = 42 + 21, = 63. A: Uncle Li's family has 63 chickens and ducks
42 + 42 △ 2 = 42 + 21, = 63. A: Uncle Li's family has 63 chickens and ducks