Question 307395
Let x = amount of .08 cement.
2= amount of .63 cement
x+2 = amount of .19 cement


The equation to solve is
.08x + .63*2= .19(x+2)
.08x + 1.26 =.19x+.38


Subtract .08x from each side:
.08x-.08x + 1.26= .19x-.08x + .38
1.26=.11x + .38


Subtract .38 from each side:
1.26-.38 = .11x+.38-.38
.88=.11x


x=.88/.11= 8 bags


For additional explanation on Word Problems, please see my own website. You can find my website by doing a Google search for my name "Dr. Robert J. Rapalje". Look for "Rapalje Homepage", which should be the first item on the search. Once you find my homepage, for a written explanation, click on "Basic, Intermediate, and College Algebra: One Step at a Time." Look in Basic Algebra in Chapter 1 for Section 1.11 Word Problems. There you will find a detailed explanation, and solutions to problems in LIVING COLOR!! 


I have many other topics explained in this way from Basic, Intermediate, and College Algebra. Please check out my website to see what I have. It's all FREE. 


Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus