Answer:
D
Step-by-step explanation:
If the total amount of chickens and pigs is 20, and the amount of legs (2 per chicken and 4 per pig), it's 56
We could set this up as a system of equation, and also set the variable as c = chickens and p = pig.
Since is a total amount of 20 for chickens and pigs, we could make this as: c + p = 20.
Since there are 2 legs per chicken and 4 legs per pigs and the total is 56, we could also put it as an equation: 2c + 4p = 55.
This fits the answer choice D, so the final answer is D.
