Form the pair of linear equations for the following problems and find their solutions by substitution method.(iv) Five years hence,the age of Jacob will be three times that of his son.Five years ago.Jacob's age was seven times that of his son.What are their present ages.

Form the pair of linear equations for the following problems and find their solutions by substitution method.(i) The difference between two numbers is 26 and one number is three times the other.Find them.

Form the pair of linear equations for the following problems and find their solutions by substitution method.(ii) The larger of two supplementary angles exceeds the samller by 18 degress.Find them.

Aman's age is there times his son's age. Ten years ago he was five times his son's age. Find their present ages.

Form the pair of linear equations in the following problems,and find their solutions(if they exist) by the elimination method:(ii) Five years age,Nuri was thrice as old as Sonu.Ten years later,Nuri will be twice as old as Sonu.How old are Nuri and Sonu?

Form the pair of linear equations for the following problems and find their solutions by substitution method.(iii) The coach of a cricket team boys 7 bats and 6 balls for ₹3800.Later she boys 3 bats and 5 balls for ₹1750.Find the cost of each bat and each ball.

Form the pair of linear equations for the following problems and find their solutions by substitution method. (iv)The taxi charges in a city consist of a fixed charge together with the charge for the distance covered.For a distance of 10 km,the charge paid is ₹105 and for a journey of 15 km,the charge paid is ₹155 .What are the fixed charges and the charges per kilometer? How much does a person have to pay for travelling a distance of 25 km?

At present a man is older than his son by 28 years. 12 years hence his age will be twice the age of his son. What are their present ages?

Form the pair of linear equations for the following problems and find their solutions by substitution method.(v)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.

Form the pair of linear equations in the following problems,and find their solutions(if they exist) by the elimination method:(iii) The sum of the digits of a two-digit number is 9.Also nine times this number is twice the number obtained by reversing the order of the digits.Find the number.

Janhu is twice as old as Indra. Six years ago Janhu was four times as old as Indra. Find their present ages.