Answer:
1240 students
Step-by-step explanation:
A ratio in simplified form is another way of expressing a fraction. Use this knowledge to set up an equation and solve for the factor by which the ratio has been simplified. Let parameter (x) represent the value by which the ratio has been simplified. Since it is given that there are (124) more boys than girls, one can use this to set up following the equation;
boys : girls = 11 : 9
11x = 9x + 124
Inverse operations,
11x = 9x + 124
-9x -9x
2x = 124
/2 /2
x = 62
Now substitute this value back into the ratio, add up the two values to find out how many students are at the school,
11x + 9x
Substiute,
11(62) + 9(62)
Simplify,
682 + 558
1240
