Simultaneous Linear Equations in Two Variables
Not what you're looking for?
A landscaper wants to combine golden landscape rock with rust-colored landscape rock to make a mix. The golden rock costs $0.59 per pound and the rust-colored rock cost $0.49 per pound. If the landscaper buys 70 pounds of the mixture costing a total of $38.80, how much of the rust-colored rock did he buy?
___Pounds
Purchase this Solution
Solution Summary
This solution is comprised of detailed step-by-step calculation and explanation of the given problem. The solution also provides students with a clear perspective of the underlying mathematical concept.
Solution Preview
Let x be the amount of golden rock and y be the amount of rust-coloured rock
According to the given conditions,
x + y = 70 ...
Purchase this Solution
Free BrainMass Quizzes
Probability Quiz
Some questions on probability
Exponential Expressions
In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts