Can someone please help me with this one ASAP. It’s due in half hour

A coffee house blended 12 pounds of espresso flavored coffee beans with 11 pounds of vanilla flavored coffee beans. The 23 pound mixture cost $166.50. A second mixture included 17 pounds of espresso flavored coffee beans and 18 pounds of vanilla flavored coffee beans. The 35 pound mixture cost $254. Find the cost per pound of the espresso and vanilla flavored coffee beans.