Question 684327
.07X+.17*4=.11(4+X)
.07X+.68=.44+.11X
.07X-.11X=.44-.68
-.04X=-23
X=-.24/-.04
X=6 BAGS OF 7% IS USED.
PROOF:
.07*6+.17*4=.11(4+6)
.42+.68=.11*10
1.1=1.1