Total number days in the year is 365 days,
Chance of snow in that year % is 5%,
To calculate the number of days (n) it will snow,
[tex]n\text{ =}\frac{5}{100}\times365\text{ days = 18.25 days = 18}\frac{1}{4}days[/tex]Hence, number of days it is expected to snow is 18 1/4 days or at 18 days approx.