Question 54843
8*.06=(8+X).04
.48=.32+.04X
.04X=.48-.32
.04X=.16
X=.16/.04
X=4 ADDITIONAL L OF WATER NEEDED TO CHANGE THE MIX FROM 6% TO 4%.
PROOF
8*.06=(8+4).04
.48=12*.04
.48=.48