Acid Problem [Mixing two things]

[DrTacoElf]

You mix 10cm^3 of 20% acid and 20cm^3 of 40% acid. Find the resulting % acid.

 

[isd121]

Resulting % = [(10*20)+(20*40)]/(10+20)
= 1000/30
= 33.33
= 33 1/3
So answer is d 😉

 

[isd121]

DrTacoIf,
why you took the question out?
If you solved it, some else can get help.