if you dilute 35 gal of a 40% acid solution with 7 gal of water, what is the amount and the strength of the mixture

Question

if you dilute 35 gallons of a 40% acid solution with 7 gal of water, what is the amount and the strength of the mixture

Answer 1

Mixture problems must be in only one item. Here is should be water.

 

0.6(35) + 1.0(7) = x(35 + 7)      40% acid is 60% water

 

Can you solve for x?

That shall be the water strength. 

Subtract from 1 and you have the acid strength.