14. A food stand sells tacos that come with either chicken or fish. On Monday they purchase 8 pounds of chicken and 3 pounds of fish and pay a total of $62.60. On Tuesday they are busier and must buy 11 pounds of chicken and 5 pounds of fish and pay a total of $93.25 for the two ingredients.

(a) Choose appropriate variables and model the information given in the problem as a system of equations. Be sure to use let statements to define what each variable represents. You do not need to solve the system in this part of the problem. ​