Question

In a maths class of 26 students, each girl drew a triangle and each boy drew a rectangle. If there were 92 sides drawn by the students how many girls were in the class?

Answer 1

3g + 4b = 92
g + b = 26

Answer 2

u get it?

Answer 3

Nope

Answer 4

first u have to know that a triangle has 3 sides
g represent the number of girls in the class, each girl draws 3 sides, therefore all girls draw in total 3g sides

Answer 5

same logic with 'b', which represents the number of boys

Answer 6

do you get it now?

Answer 7

3x + 4y = 92 ; x=no of sides of triangle used by girls and y= no of sides of rectangle used by boys. (as girls used three sides to form a triangle and boys used 4 sides to form a rectangle, adding both the quantities, we get the above equation :) )
x + y = 26; (addition of boys and girls)
now solve them using equations in two variables