The answer would be 46/219 or 0.21 or 21%. These all could be the possible answers, but written differently (just depends on how you want to write it). And it is because there are 46 non-social media users out of the whole entire total of 219 people, so you just divide 46 by 219 to get your answer.
Answer:
3 times
Explanation:
When the dough is folded, it increases by a constant factor. We can model the growth of the thickness using the exponential growth model

Where:
Initial thickness,
= 2mm
Growth factor, r =8%=0.08
We want to find the smallest number of times Soon Yi will have to roll and fold the dough so that the resulting dough is at least 2.5mm.
i.e When 

Therefore, the smallest number of times Soon Yi will have to roll and fold the dough so that the resulting dough is at least 2.5mm thick is 3.