(94-35× 2) ÷ 2 = 12 (number of rabbits) Total number (35)- number of rabbits (12)= number of chickens (23)
Description: Let rabbits and chickens lift their feet at the same time, so that the total number of feet in the cage is reduced by two. Because the chicken has only two feet, only the rabbit's feet are left in the cage, and then the number of rabbits is two.
Extended data:
Chicken and rabbit in the same cage Source: Sun Tzu's Art of War
Sunzi Suanjing is an important mathematical work in ancient China. It was written in the fourth and fifth centuries, that is, about 1500 years ago. The author's life and writing year are unknown.
The volume describes the system of vertical and horizontal alternation and multiplication and division, and illustrates the algorithm of calculating scores and the method of calculating Kaiping with examples.
Baidu encyclopedia-sun Tzu's art of war
Baidu encyclopedia-chicken and rabbit in the same cage