Everybody says that in order to solve two variables, you need two equations. I am confused, because is this not true here:
"A man sells oranges ("O") for $2 and grapefruits ("G") for $3. How many oranges did he sell?
1) Last week the man made a total of $5.00
2) Irrelevant for the point of this question
-Can we not conclude that O=1 and G=1?... And thus we just solved two variables with one equation?
-When does this hold true? Because, I keep getting DS questions wrong thinking that this will be some sort of trick in higher level DS questions.
"A man sells oranges ("O") for $2 and grapefruits ("G") for $3. How many oranges did he sell?
1) Last week the man made a total of $5.00
2) Irrelevant for the point of this question
-Can we not conclude that O=1 and G=1?... And thus we just solved two variables with one equation?
-When does this hold true? Because, I keep getting DS questions wrong thinking that this will be some sort of trick in higher level DS questions.
