Class 10MathematicsPair of Linear Equations in Two VariablesMix Examples - Pair of Linear Equations in Two Variables
MediumAn employee invests ₹ $x$ at the rate of $5 \%$ and invests ₹ $y$ at the rate of $7 \%$,then he gets ₹ $310$ as yearly interest. Symbolically it is written as ..........
- A$5x + 7y = 310$
- B$7x + 5y = 3100$
- C$5x + 7y = 31000$
- D$7x + 5y = 310$
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For a pair of equations $5x - 4y = 1$ and $10x = 8y + 2$,in usual notations $a_{1}b_{2} - a_{2}b_{1} = \dots$
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View SolutionSolve the following pairs of equations:
$4x + \frac{6}{y} = 15$
$6x - \frac{8}{y} = 14, y \neq 0$
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$6x - \frac{8}{y} = 14, y \neq 0$
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View SolutionSolve the following pairs of equations by the method of elimination:
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