At a school number of boys : number of girls = 9 : 7 There are 116 more boys than girls. Work out the total number of students at the school.
B:G --> 9:7
Expressed as fractions of the whole group, boys are 9/16 of the group and girls are 7/16 of the group.
We can use algebra to work out the total group number. For our working, I will use x to represent the total group number, and working will be to find x.
9/16x = 7/16x + 116
9/16x - 7/16x = 116
2/16x = 116
1/8x= 116
x= 116 x 8
x= 928
The total number of students at the school is 928.
DM
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