Chapter 3 – Pair of Linear Equations in Two Variables

The sum of 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. nine times this number is twice the number obtained by reversing the order of the digits.Find the number. The sum of digits of a two-digit number is [...]

The sum of 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. nine times this number is twice the number obtained by reversing the order of the digits.Find the number. The sum of digits of a two-digit number is [...]

Five years ago, Nuri was thrice as old as Sonu. Ten years later, Nuri will be twice as old as Sonu. How old are Nuri and Sonu? Five years ago Nuri was thrice as old as Sonu. Ten years later Nuri will be twice as old as Sonu. How old are Nuri and Sonu? October [...]

If we add 1 to the numerator and subtract 1 from the denominator, a fraction becomes 1. It also becomes 1/2 if we only add 1 to the denominator. What is the fraction? a fraction becomes 1. It also becomes 1/2 if we only add 1 to the denominator. What is the fraction? If we [...]

Solve the following pair of linear equations by the elimination method and the substitution method: x/2 + 2y/3 = -1, x- y/3 =3 Solve the following pair of linear equations by the elimination method and the substitution method: x/2 + 2y/3 = -1 x- y/3 =3 October 3, 2020 Category: Chapter 3 - Pair of [...]

Solve the following pair of linear equations by the elimination method and the substitution method: 3x – 5y – 4 = 0 , 9x = 2y + 7 9x = 2y + 7 Solve the following pair of linear equations by the elimination method and the substitution method: 3x - 5y - 4 = 0 [...]

Solve the following pair of linear equations by the elimination method and the substitution method: 3x + 4y = 10, 2x – 2y = 2 2x - 2y = 2 Solve the following pair of linear equations by the elimination method and the substitution method: 3x + 4y = 10 October 3, 2020 Category: Chapter [...]

Solve the following pair of linear equations by the substitution method: x + y = 5, 2x – 3y = 4 2x - 3y = 4 Solve the following pair of linear equations by the substitution method: x + y = 5 October 3, 2020 Category: Chapter 3 - Pair of Linear Equations in Two [...]

Five years hence, the age of Jacob will be three times that of his son. Five years ago, Jacob’s age was seven times of his son. What are their present ages? Five years hence Jacob's age was seven times of his son. What are their present ages? the age of Jacob will be three times [...]

A fraction becomes 11/9​ if 2 is added to both the numerator and the denominator. If 3 is added to both the numerator and the denominator it becomes 6/5​, find the fraction. A fraction becomes 11/9​ if 2 is added to both the numerator and the denominator. If 3 is added to both the numerator [...]