1.total chat = 36 [(30×120)/100
total males = 32
total femelles = 88 [ 120-32]
total chiens = 84 [120-36]
total males chiens = 21 [(25×84)/100]
total chiens femelles = 63 [84-21]
total chat males = 11 [32-21]
total chat femelles = 25 [88-63]
2. (25×100)/120 = 20,8%
