Answer:

Let the number of boys be x and the number of girls be y.

In the 1st case

x+y=180 ----1

In the 2nd case

x+10=y

x-y= -10 -----2

Now,

equation 1 - equation 2

• x + y - ( x - y ) = 180 - ( -10 )
• x + y - x + y = 180 + 10
• 2y = 190
• y = 190/2
• y = 95

Putting the value of y in equation 1 , we get ,

• x + 95 = 180
• x = 180 - 95
• x = 85

Hence ,

Number of boys ( x ) = 85

Number of girls ( y ) = 95

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Let the number of boys be x and the number of girls be y .

In the 1st casex + y = 180 ---

(1) In the 2nd case,x + 10 = y x - y = -10 (2) Now,eq (1) - eq (2)→x + y - (x -y ) = 180 - (-10)→x+y-x+y = 180 + 10► 2y = 190→y = 190/2→y=95

Putting the value of y in eq(1), we get,x + 95 = 180→x = 180 - 95→x=85

Hence,

★ Number of boys (x) 85★ Number of girls (y) 95