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
75g/400ml: Simplify per unit
÷ by bottom.
0.1875g/ml nearest hundredth
0.19g/ml
Babanansn
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I used Desmos Graphing Calculator. Helps so much!
Hope this helps!