Jack has 5 cats and 1 dog. if the dog’s weight is 3 times the average (arithmetic mean) weight of the cats, then the dog’s weight is what fraction of the total weight of all 6 animals?

Step-by-step explanation:

Let x be the weight of a cat , the the weight of the dog will be 3x

Given : Jack has 5 cats and 1 dog.

The weight of 5 cats will be 5x.

The total weight of the pets =

Now, the fraction of the total weight of all 6 animals is dog’s weight  :-

Hence, the  fraction of the total weight of all 6 animals is dog’s weight=