How many liters of 15% acid and 33% acid should be mixed to make 40 liters of 21% acid solution?

26 and 2/3 of 15% acid

13 and 1/3 of 33% acid

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.