SOLUTION: When is it appropiate to use the two variable method of a word problem?

SOLUTION: When is it appropiate to use the two variable method of a word problem?

Algebra.Com

Question 191735: When is it appropiate to use the two variable method of a word problem?
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
when there are two unknowns.....
RELATED QUESTIONS
A college student is considering a subscription to a social networking Internet site that (answered by stanbon)

I don't understand hoe to solve this word problem. It says King Kong and Godzilla are... (answered by jorel1380,chessace)

When using factorizing/completing the square method to solve a quadratic equation, is it... (answered by stanbon)

PROBLEM 23---BUSINESS APPLICATION THE YEARLY SPENDING (IN BILLIONS OF DOLLARS) BY US... (answered by stanbon,renevencer22)

(substitution method word problem): One machine has a fixed daily cost of $50 and a... (answered by ankor@dixie-net.com)

Could you please set up this word problem? So I may then solve it. If three times the... (answered by richwmiller)

Below are the equations that I need assistance with... 1. 2x+y-3z=-4 2. 4x-2y+z=9 (answered by Alan3354)

Here is my question: The cost of producing a number of items x is given by C = mx + b,... (answered by funmath)

Hi, I don't know how to do this word problem in my algebra class. We are supposed to use... (answered by mananth)