Loading...

#36664

profit and loss

systems

medium

75 sec

A chemist needs to create 30 liters of a 40% saline solution by mixing a 25% saline solution with a 60% saline solution. Which system of equations can be used to determine the volume, in liters, of the 25% solution, $x$ , and the volume, in liters, of the 60% solution, $y$ , needed for the mixture?

A.

$x + y = 30 0.25 x + 0.60 y = 0.40$

B.

$x + y = 30 0.25 x + 0.60 y = 40$

C.

$x + y = 30 0.25 x + 0.60 y = 0.40 (30)$

D.

$x + y = 40 0.25 x + 0.60 y = 30$