at least how many dogs do i own if more than half dogs are male, and more than 40% are female.怎么做啊?

at least how many dogs do i own if more than half dogs are male, and more than 40% are female.
怎么做啊?

Answer:7 dogs.
4 male dogs = 57% ---- satisfies the condition that "more than half dogs are male"
3 female dogs = 43% ---- satisfies the condition that "more than 40% are female"

雄性狗数量大于一半，雌狗数量大于40%，至少需要多少只狗？