A pet store has six dogs for sale. They have half as many cats, twice as many birds, and thrice as many fish for sale. How many animals are for sale in the pet store? Let's think first. Chain of thought:
The pet store has 6 / 2 = 3 cats for sale. They have 6 x 2 = 12 birds for sale. They have 6 x 3 = 18 birds for sale. Therefore, there are a total of 6 + 3 + 12 + 18 = 39 pets for sale.
Therefore, the answer is 39.