Alaboratory technician needs to make a 135-liter batch of a 20% acid solution. how can the laboratory technician combine a batch of an acid solution that is pure acid with another that is 10% to get the desired concentration?

15 liters of pure acid and 120 liters of 10% solution are needed.

Step-by-step explanation:

Let us assume that,

x = liters of pure acid ,

y = liters of 10% acid.

As we need a total of 135 liter of batch, so

 ------------------------------1

As we need to make a batch of 20% acid solution, hence acid content of the mixture of two acids will be same as of the final one, so

 -----------2

Subtracting equation 2 for 1,

Putting this in the equation 1,

Therefore, 15 liters of pure acid and 120 liters of 10% solution are needed.

okay..i will pick 8!

where does the z at is it on the x axes or on the y axes any way if it is on the y axes put it horizontally and if it is on the x axes put it vertically