Krishna,
In the example that Palmbak gave, he illustrated scenarios whereby the nearest five always resulted in rounding the original number UP.
If you understand "round a number to the nearest 5.00" (combined with him examples) to mean rounding UP, then use Ngolem's example.
Otherwise, if rounding to the nearest 5 means (as I suspect it might) rounding to the nearest number divisible by 5, regardless if the number may end up being rounded DOWN, then JoeCrystal's formula is sound.
Naith