Question 224365
.51X+.13(13-X)=.29*13
.51X+1.69-.13X=3.77
.38X=3.77-1.69
.38X=2.08
X=2.08/.38
X=5.47368 LITERS OF 51% ACID IS USED.
13-5.47368=7.52632 LITERS OF 13% ACID IS USED.
PROOF:
.51*5.47368+.13*7.52632=3.77
2.79158+.97842=3.77
3.77=3.77