The monthly income of a and b are in ratio 4:3 .Each of them saves rs600.If the ratio of their expenditure is 3:2then the monthly income of a is
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These are the questions of Linear equations in two variables. This question can be easily solved by the graphical method.
So what we need here are two equations. Let the income of a and b be 4x and 3x respectively. Let their savings be in y variable. Now we know that, earning minus saving is equal to expense. So, we can get two equations.
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