I'm pretty sure that it's 760 people out of 975 do there homework before 10pm is because if u multiply 975 by 78% it gives u your answer... I think that's how u find the persentage of a number
That would be 90 and 180 i think
The answer is 1.5
1.2=1.0
1.3=1.1
1.4=1.2
1.5=1.2
The answer is linked below