Question

Lizzo owns 20 pets--all dogs and cats. She has 2 more than twice as many cats as she does dogs. How many cats does she own?

Answer 1

She has 6 more cats than dogs

Answer 2

Answer: 6 Cats and 14 Dogs

Explanation:

D + C = 20

D = 2C + 2

So D + C = 20 is the same thing as

C = 20 - D

Plug that into the second equation

D = 2C + 2

D = 2(20-D) + 2

D = 40 - 2D + 2

+2D + 2D

————————

3D = 42

So D = 14 , now plug this into the original equation

D + C = 20

14 + C = 20

C = 6