Using a Less than and More than

Hi guys I am having some problems using a less than and more than in one statement

         if (Time <= 100f && >= 0f) 
         {
             gold = true;
         }
 
         if(Time  < 200f && >= 100f)
         {
             silver = true;
         }
 
         if(Time >= 200f)
         {
             bronze = true;
         }

I am getting these errors Assets/Scripts/Timer.cs(42,38): error CS1525: Unexpected symbol >=' Assets/Scripts/Timer.cs(47,18): error CS1519: Unexpected symbol if' in class, struct, or interface member declaration Assets/Scripts/Timer.cs(47,26): error CS1519: Unexpected symbol <' in class, struct, or interface member declaration Assets/Scripts/Timer.cs(49,32): error CS1519: Unexpected symbol =' in class, struct, or interface member declaration