Question

The number of boys in a school is 240 less than the number of girls. If the total number of students in the school is 510, find the number of girls in the school.​

Answer 1

Step-by-step explanation:

tital no. of atudent = 510

no. of boys = x

no. of girls = y

ATQ

x=y-240

or

x - y = -240 ____(1)

x + y = 510 _____(2)

adding eq. 1 and 2

2x = 510 -240

2x = 270

x = 135

puttibg value of x in eq. 1

135 - y = -240

y = 240 + 135

y = 375

so no. of boys (x) = 135

and no. of girls (y) = 375