Assignment:
Eva created a coffee blend for her restaurant by mixing Kenya and French Roast coffee beans. The Kenya beans cost $15 per pound and the French Roast costs $8 per pound. She bought a total of 10 pounds of coffee for a total of $97.50.
How much of each type of bean did she buy?
A) 2.5 lbs Kenya and 7.5 lbs French Roast
B) 3 lbs Kenya and 7 lbs French Roast
C) 1.5 lbs Kenya and 8.5 lbs French Roast
D) 4 lbs Kenya and 6 lbs French Roast
Provide complete and step by step solution for the question and show calculations and use formulas.