In the lab, Teresa has two solutions that contain alcohol and is mixing them with each other. She uses 4 times as much
Solution A as Solution B. Solution A is 17% alcohol and Solution B is 12% alcohol. How many milliliters of Solution B does
she use, if the resulting


mixture has 560 milliliters of pure alcohol?
Number of milliliters of Solution B:

Help

In the lab Teresa has two solutions that contain alcohol and is mixing them with each other She uses 4 times as much Solution A as Solution B Solution A is 17 class=

Respuesta :

Answer:

Step-by-step explanation:

Assume as a basis  the final mixture is 1000 mL.  That means 399 mL of alcohol

Let x = mL of Soln A and y = mL of soln B.

x = 2y.

Now x + y = 1000

and  0.2x + 0.17y = 399

but x = 2y so 0.4y + 0.17y = 399

0.57y = 399.

y = 700 mL  (That is your mL of solution B)

The Answer is 4,666.66667 just to let u know I’m not considered with the answer