aviannalynn
contestada

DOES ANYONE KNOW HOW TO DO THIS??????????
Donna's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Donna $4.20 per pound, and type B coffee costs $5.30 per pound. This month, Donna made 145 pounds of the blend, for a total cost of $659.90. How many pounds of type B coffee did she use?

Respuesta :

selfopl

Answer:

She used 49 of type B

Step-by-step explanation:

  • 4.20 x 96 = 403.2
  • 5.3 x 49 = 259.7
  • 403.2 + 259.7 = 659.9
ChemBen

Step-by-step explanation:

Same steps, different problem.

x - pounds of type A coffee for current month

y - pounds of type B coffee for current month

x+y=145

4.2x+5.3y=659.9

x+y=145 -> multiply both sides by 4.2

4.2x+5.3y=659.9

4.2x+4.2y=609

1.1y=50.9