Two different kinds of coffee beans are blended individually, they cost $4.60/kg and $6.40/kg How much of each kind was used if 400kg of the mixture cost $6/kg?

Question

Don't solve the linear system. Just, write let statements and the equations.

Answer 1

$4.60/kg and $6.40/kg How much of each kind was used if 400kg of the mixture cost $6/kg?

 

(x)(4.60) + (y)(6.40) = (400)(6.00)

 

x+ y = 400

 

Let x = # of kg of 4.60 type; let y = # of kg of 6.40 type