Question

Lena buys 12 cans of soft drinks and 10 sandwiches for a picnic. Patrick buys 8 cans of soft drinks and 11 sandwiches for the same picnic. Let ​c​ be the cost of a soft drink. Let ​s​ be the cost of a sandwich. Write an expression that represents the total cost.

Answer 1

21s + 20c = TOTAL

Explanation:

Since I have no total or how much one thing costs. I just attach the variable to the numbers and add them to find a total.

Answer 2

12c + 8c + 10s + 11s