SOLUTION: Use two equations in two variables to solve the application. A landscaper used 130 pounds of grass seed containing twice as much bluegrass as rye. He added 19 more pounds of bl

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons  -> Linear Equations Lesson -> SOLUTION: Use two equations in two variables to solve the application. A landscaper used 130 pounds of grass seed containing twice as much bluegrass as rye. He added 19 more pounds of bl      Log On


   

Question 1130794: Use two equations in two variables to solve the application.
A landscaper used 130 pounds of grass seed containing twice as much bluegrass as rye. He added 19 more pounds of bluegrass to the mixture before seeding a lawn. How many pounds of bluegrass did he use?
Found 2 solutions by addingup, josgarithmetic:
Answer by addingup(3677) About Me  (Show Source):
Answer by josgarithmetic(39620) About Me  (Show Source):
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b bluegrass
r rye

system%28b%2Br=130%2Cb%2Fr=2%2Cb%2B19%29

system%28b%2Br=130%2Cb=2r%29

3r=130

r=43%261%2F3-----------b=86%262%2F3


b%2B19
highlight%28105%262%2F3%29-------pounds of bluegrass seed actually used.