Answer:
The number of sunny days this year = 0.75x
where, x is the sunny days in last years.
Explanation:
Given - This year there was 25% fewer sunny days than last year.
To find - What is the number of sunny days this year?
Proof -
Let us assume that,
The total number of sunny days last year = x
Given that,
This year there was 25% fewer sunny days than last year.
i.e this year total sunny days = 100 - 25 = 75 %
So,
we get
If there were x sunny days last year,
Then,
This year Total sunny days = 0.75x