Question

For his coffee shop, Abdul wants to make a mocha-java blend that will sell for $18/kg. The mocha coffee beans sell for $20/kg, and the java coffee beans sell for $15/kg. How many kilograms of each kind of coffee bean should he use to make 50 kg of the mocha-java blend?

Answer 1

Explanation:

let

x = kg of mocha beans

y = kg of java beans

so

(1) x + y = 50

(2) 20x + 15y = 18(50)

solve by substitution (or whatever method you prefer):

(x, y) = (30, 20)