well I hate to say this but my question was there are 13 animals and 40 legs how many pigs and chickens are there and you said 9 and 2 that 11 and I need 13

There are 7 Pigs and 6 Chickens

Step-by-step explanation:

Let's assume

Pigs= x

Chicken=y

(eq 1) x+y = 13y=13-x

4x + 2y = 40

replace the y

4x+ 2(13-x) = 40

you get x = 7

replace x in y=13 -x

you get y = 6

hence the answer.

d is the answer

step-by-step explanation: