Which system of equations will solve the following word problem

Question

Which system of equations will solve the following word problem? One large casserole (L) and two small casseroles (S) can feed 20 people. One large casserole is equal to three small casseroles. How many people can a small casserole feed?

Answer 1

Hi Nang, use the following twp equations:

1L + 2S = 20

1L = 3S

Substitute 1L for 3S in the first equation and solve for S.

1L + 2S = 20

3S + 2S = 20

5S = 20

S=4; One small casserole can feed 4 people.

Let me know if you have any more questions!

-TutorB