Question

There are 15 animals in a barn. These animals are horses and chickens. There are 44 legs in all. Which system of equations represents the situation?

Answer 1

Answer:

2a + 4b = 44

a+b=15

Step-by-step explanation:

Call a the number of chickens, b the number of horses

We have: 2a + 4b = 44

                a + b = 15

               => 2(a+b) = 30

               <=> (2a + 4b) - (2a + 2b) = 14

                     2b = 14

                  => b = 7

                  => a = 8

So 8 chickens, 7 cows.