Class 10MathematicsPair of Linear Equations in Two VariablesMix Examples - Pair of Linear Equations in Two Variables
MediumRaj got $\frac{3}{4}$ times the marks as obtained by Nil in the annual examination of Mathematics. The sum of their marks is $140$. Represent this as a pair of linear equations in two variables.
- ALet $x$ be the marks of Raj and $y$ be the marks of Nil.
- BThe equations are $x = \frac{3}{4}y$ and $x + y = 140$.
- CThe equations are $3x - 4y = 0$ and $x + y = 140$.
- DThe equations are $4x - 3y = 0$ and $x + y = 140$.
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