Laravel floating if greater 85 not working. it show always smaller than 85

Hy, im learn about backend and laravel not long ago

im stuck on if function that using floating type on my project

<td>
  ,
  @if($participant->vt_avg > 85)
   x
  @else
   y
  @endif  
</td>

it should print vt_avg score , it's "x" if greater than 85 and "y" if smaller than 85

but it turn out vt_avg,y the result shows that all vt_avg is smaller than 85

Can you please help me im stuck

via Chebli Mohamed