Round to 25, 50, 75, 100

Question

I\'m not a Math person so I\'m having a hard time to come up with a calculation to round the decimals to 25, 50, 75 and 100. And this will not be the typical round off because t

Answer 1

public float RoundNearestCents(double d)
{
  return (double)(Math.Ceiling(d * 4)) / 4;
}