NCERT Exercise 3.1 - Q1(i) - Pair of Linear Equations in Two Variables
Question: Form the pair of linear equations in the following problems, and find their solutions graphically. (i) 10 students of Class X took part in a Mathematics quiz. If the number of girls is 4 more than the number of boys, find the number of boys and girls who took part in the quiz. X X' Y Y' O
Answer: The number of boys is 3 and the number of girls is 7.
Full step-by-step NCERT solution with diagrams on Something by Zero.