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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Similar Questions
Solve the following pair of equations by the cross-multiplication method:
$\frac{x}{a} - \frac{y}{b} = 0$
$ax + by = a^2 + b^2$
$\frac{x}{a} - \frac{y}{b} = 0$
$ax + by = a^2 + b^2$
Easy
View SolutionIf the following pair of equations has infinite solutions,then find the value of $k$:
$5x + 2y = k$
$10x + 4y = 3$
$5x + 2y = k$
$10x + 4y = 3$
Medium
View SolutionWrite an equation of a line passing through the point representing the solution of the pair of linear equations $x+y=2$ and $2x-y=1$. How many such lines can we find?
Easy
View SolutionThe graph of a pair of lines $3x - 2y = 2$ and $6x - 4y = 4$ is.........
Medium
View Solution$A$ two-digit number is obtained by either multiplying the sum of the digits by $8$ and adding $1$,or by multiplying the difference of the digits by $13$ and adding $2$. Find the number.
Medium
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