Question 269586
.60X+.30(200-X)=.525*200
.60+60-.30X=105
.30X=105-60
.30X=45
X=45/.30
X=150 MILLILITERS OF THE 60% ACID SOLUTION IS USED.
PROOF:
.60*150+.30(200-150)=105
90+.30*50=105
90+15=105
105=105