Question 29998
Let the wheat flour be x
Let the rye flour be y
First equatioN:
*[tex 12x+15y=18.30]

Second equation:

*[tex 15x+10y=16.75]
Solve for y in the second equation:
10y=16.75-15x
y=1.675-1.5x (subsitution)
Subsitute the value in the first equation:
12x+15(1.675-1.5x)=18.3
12x-22.5x=18.3-25.125
-10.5x=-6.825
x=0.6825


*[tex y=1.675-1.5(0.6825)]

*[tex y=0.65125]


<font color = purple>Hence the cost of the wheat flour is $0.68 and the rye flour cost $0.65</font>
Paul.