An animal shelter houses only cats and dogs, and there are 25% more cats than dogs. If there are 40 cats, how many dogs are there, and how many animals are there total?

X is the number of dog

y is the number of cats, y=40

25% of x is 25*x / 100=25x/100=x/4

and there are 25% more cats than dogs means y + x/4=x implies 40 = (3/4) x

x=160/3=53

so the number of dogs is 53 and the number of cats is 40

the total number is 53+40=93

X - number of dogs,

100% + 25% = 125%

x * 1.25 = 40

x = 40 : 1.25

x = 32

There are 32 dogs.

In total: 32 + 40 = 72 animals.