J P Mohindru and Bharat Mohindru Solutions for Chapter: Pair of Linear Equations in Two Variables, Exercise 10: COMPETITION FILE

For what value of $k,$ do the equations $3x-y+8=0$ and $6x-ky=-16$ represent coincident lines?

If the lines given by $3x+2ky=2$ and $2x+5y+1=0$ are parallel, then the value of $k$ is:

The value of$c$ for which the pair of equations $cx-y=2$ and $6x-2y=3$ will have infinitely many solutions is

One equation of a pair of dependent linear equations is $-5x+7y=2$

The second equation can be:

A pair of linear equations which has a unique solution$x=2, y=-3$ is

If $x=a, y=b$ is the solution of the equations $x-y=2$and $x+y=4,$ then the values of $a$ and $b$ are respectively:

Aruna has only $₹1$ and $₹2$coins with her. If the total number of coins that she has is $50$ and the amount of money with her is$₹75,$ then the number of $₹1$ and $₹2$ coins are respectively:

The father's age is six times his son's age. Four years hence, the age of the father will be four times his son's age. The present ages, in years, of the son and the father are respectively: