How many liters of a 70% acid solution must be added to 12 liters of a 20% acid solution to produce a 40% acid solution?

Question

 My online textbook is not working and I can't figure this out.

Answer 1

Hi Savannah!

 

Please use the previous problem to solve this one.  It is the same format and two tutors have answered.  You can do it!!!

 

I'll get you started;  Here"s the  equation:

 

x(70) + 12(20) = 40(12 + x)

 

solve for x

 

I bet you can do it!