Form the pair of linear equations in the following problems and find their solution by substitution method : If 1 is added to each of the two numbers, their ratio becomes 1 : 2 and when 5 is subtracted from each of these, the ratio becomes 5:11. Find the numbers.

Form the pair of linear equations in the following problems and find their solution by substitution method : A horse and 2 cows together cost ? 680. If a horse costs ? 80 more than a cow, find the cost of each.

form the pair of linear equations for the foIlowing problems and find their solution by substitution method: The larger of two supplementary angles exceeds the smaller by 18 degrees, Find them

Form the pair of linear equations in the following problems and find their solution by substitution method : Find the fraction which becomes to 2/3 when the numerator is increased by 2 and equal to 4/7 when the denominator is increased by 4 .

Form the pair of linear equations in the following problems and find their solution by substitution method : The path traced by two trains are given by equations x + 2y - 4 = 0 and 2x + 4y — 12 = 0. Will the path cross ?

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method :-When 3 is added to the denominator and 2 is subtracted from the numerator, a fraction becomes 1/4 .And when 6 is added to numerator and the denominator is multiplied by 3, it becomes 2/3 . Find the fraction

Form the pair of linear equations in the following problems and find their solution by substitution method : A fraction reduces to 1/4 when 2 is subtracted from the numerator and 3 is added to the denominator. But it reduces 2/3 if 6 is added to the numerator and denominator is multiplied by 3. Find the fraction.

From the pair of linear equations in the foIlowing problems find their solution by substitution method: A fraction becomes 9/11 . If 2 is added to both the numerator and the denominator. If , 3 is added to both the numerator and the denominator it becomes 5/6 Find the fraction.