Final answer:
To find the percentage of weight the goats account for, consider the ratio of the number of goats to the number of dogs and the ratio of their average weights. Assuming 3 goats and 5 dogs, the goats account for approximately 47.37% of the weight of all the animals on the ship.
Step-by-step explanation:
To find the percentage of weight the goats account for, we need to consider the ratio of the number of goats to the number of dogs and the ratio of the average weight of a goat to the average weight of a dog.
Let's assume there are 3 goats and 5 dogs on the ship. Since the ratio of goats to dogs is 3:5, the total number of animals on the ship is 3 + 5 = 8.
Now, let's assume the average weight of a goat is 3x pounds and the average weight of a dog is 2x pounds. The total weight of all the animals on the ship is then 3x * 3 + 2x * 5 = 9x + 10x = 19x.
The weight percentage that goats account for is (3x * 3) / (9x + 10x) * 100 = 9x / 19x * 100 = 47.37%