Someone me and show me how you got the answer super super in advance

18 liters of 100 is 18 percent. So the chemist would need 40 liters of acid to make a 40% acid solution.

18/100
=0.18
Convert it to a percent by moving the decimal point two places to the right.

So 40/100
=.40
Move the decimal point over two and add the percent sign.
40%

I’ll you if you answer my questions!

hope it is correct if not i'm srry i tried to