Question 113412
Let y=number of men, y+680=number of women
(y+680)/y=8/3 Proportion
3(y+680)=8y multiply 3y times each side to eliminate fractions.
3y+2040=8y
5y=2040 subtract 3y from each side.
y=408 men
408+680=1088 women
1088+408=1496 teachers
Check
408/1088=3/8
Ed