Given :
The ratio of adult cats to kittens at a pet care center on Monday was 5:4 .
There were 36 kittens there that day Sunday 46 adult cats were at the Pet Care Center.
To Find :
The difference between the number of adult cats at the Pet Care Center on Sunday and Monday.
Solution :

So, number of adult cats on Monday are 45.
It is given that, number of adult on Sunday are 46.
Therefore, the difference is 46-45 = 1.
Hence, this is the required solution.