Refactoring if-else if - else

Refactoring if-else if - else

I have the following code example
if(object.Time > 0 && <= 499)
{
rate = .75m
}
else if(object.Time >= 500 && <= 999)
{
rate = .85m
}
else if(object.Time >= 1000)
{
rate = 1.00m
}
else
{
rate = 0m;
}
My question is what design pattern can I use to make this better?
Thanks!