Just take the numerator and denominator of the given fraction as x and y respectively and frame the equation according to given conditions.

Take the speed of train and bus as x and y respectively and then set the equation up according to the given condition.

Find the value of x from equation 1 and sustitute it into equation 2.

Arrange the coefficients of the given linear equations as per the cross multiplication method .

Let the length and width of the rectangle be x and y respectively. Put the given conditions into a linear equation.

Take the length and width of the given equation as x and y respectively .And then apply the given conditions to frame the linear equations.

Just use the criterion for checking whether the given system of linear equation is solvable or not if solvable solve it by putting the ratio of coefficients according to the given condition.

Substitute the value of x in terms of y from first equation to the second equation.

Take the speed of train and bus as x and y respectively and then set the equation up according to the given condition.

First of all arrange the coefficients of the given equation according to the conditions for solvability of the linear equation .