Take the digit at units place and tens place as x and y respectively.Then use the place value of the digits and arrange the digits assumed according to the given conditions.

Assume the first and second number as x and y respectively.

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

Let the first and second number be x and y respectively.

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

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

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

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.

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

Just arrange the coefficients of the given equation according to cross multiplication and solve them.