3 years ago

At a school number of boy:number of girls is in the ratio 11:9

Mathematics

1 answer:

const2013 [10]3 years ago

5 0

Answer:

1240 (I'm not so sure but per my calculation that is what i got)

Step-by-step explanation:

Boy : Girl

11 : 9

124 + x : x

11/9 = 124 + x / x

9(124 + x) = 11 x

1116 + 9x = 11x

1116 = 11x - 9x

1116 = 2x

x = 558

Thus, there are 558 girls in the school

Number of boys = 124 + x

= 124 + 558

= 682

Therefore, total number of students = 558 + 682 = 1240 students

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