Ten students of class X took part in Mathematics quiz. If the number of girls is 4 more than the number of boys. Represent this situation algebraically.

Form the pair of linear equations in the following problem, and find the solution graphically: 10 students of class X took part in 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.

From the pair of linear equations in the following problems, and find their solutions graphically.(i) 10 students of Class X took pan 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.(ii) 5 pencils and 7 pens together cost Rs 50, whereas 7 pencils and 5 pens together cost Rs 46. Find the cost of one pencil and that of one pen.

In a class of 36 students, 20 are girls and the rest are boys. Find the ratio of: the number of girls to the number of boys.

In a class of 40 pupils, the number of girls is three-fifths of the number of boys. Find the number of boys in the class.

The number of boys and girls in a class are in the ratio 7:5. The number of boys is 8 more than the number of girls. What is the total class strength?

In a class, three are 30 boys and 25 girls. Find the ratio of the number of girls to that of total number of students.

In a class, three are 30 boys and 25 girls. Find the ratio of the number of boys to that of total numbers of students.