The 6 students represent (100−15−45−25)%=15% of those invited to join the committee. If x people were invited to join the committee, then 0.15x=6. Thus, there were
6
0.15
=40 people e invited to join the committee. It follows that there were 0.45(40)=18 teachers and 0.25(40)=10 school and district administrators invited to join the committee. Therefore, there were 8 more teachers than school and district administrators invited to jointhe committee.