Mo's Cafe has 12 tables. Some tables can sit 2 people while others
can sit 4 people. How many of each
type of table does the cafe have so
that exactly 38 customers can be
seated.

    A = 5

                  B = 7

Step-by-step explanation:

Let A be number of 2 seat tables

Let B be number of 4 seat tables

  A + B = 12

  A = 12 - B

        2A + 4B = 38

2(12 - B) + 4B = 38

24 - 2B + 4B = 38

                2B = 14

                  B = 7

  A = 12 - 7

  A = 5

the answer is 0.3175 hope that you ^w^

also you might actually want to put this picture up if you want people to solve it luckily i remember this question

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.