Question 169202
.23*440+.12x=.145(440+x)
101.2+.12x=63.8+.145x
.12x-.145x=63.8-101.2
-.025x=-37.4
x=-37.4/-.025
x=1,496 liters of 12% acid are used.
Proof:
.23*440+.12*1,496=.145(440+1,496)
101.2+179.52=.145*1,936
280.72=280.72