Question

Is it possible to mix a 10% acid solution and a 70% acid solution to obtain a 80% acid solution? Why or why not?

Choose the correct answer below.
O A. It is possible. Solving the equation, which
summarizes the information given, results in
positive x or y liters.
0.1x+0.7y=0.86x + y), where
x= number of liters of 10% solution
y = number of liters of 70% solution
OC. It is not possible. Solving the equation, which
summarizes the information given, results in
OB. It is not possible. Solving the equation, which
summarizes the information given, results in
negative x or y liters.
0.1x+0.8y=0.7(x+y), where
x= number of liters of 10% solution
y = number of liters of 70% solution
OD. It is possible. Solving the equation, which
summarizes the information given, results in

Answer 1

Answer: It is not possible. I can't really read the answer choices, but I'll show you how this is wrong:

If you mix two solutions, you create a new ratio.

The two solutions together are now 200% of the original size of the other two solutions, so you can imagine it like:

70/200 + 10/200

35/100 + 5/100 = 40/100, or 40%

This is the percent acid solution made by mixing the two solutions.