Answer:
3/10 of the days were sunny.
Explanation:
We know that out of 100 days, 30 were sunny. So, we will make the fraction 30/100.
We can simplify this fraction by dividing both the numerator and the denominator by 10.
30 ÷ 10 = 3
100 ÷ 10 = 10
3/10 of the days were sunny.