Answer :
24 days were rainy cuz there is 3 tens in 30 and 8 times 3 is 24
Set it up as a fraction.
8/10=?/30
10 times 3 is 30
What ever you do to one side, you do to the other. So 8 times 3.
That is 24.
So your answer is 24 out of 30 days were rainy.