Question #15216
1 Answer
Sep 19, 2017
90 L of water will reduce to 30% acid concentration
Explanation:
90L (60%) + xL(0%) = (90 + x)L(30%)
this equation includes the volume and acid proportion
the acid equation is:
54 L + x(0) = 27 L + 0.30x L
Since all terms are in Litres, we can dispense with the units
54 = 27 + 0.30x
subtracting 27 from both sides:
27 = 0.30x
divide both sides by 0.3
90 = x
