A certain species of fish costs ​$3.19 each. You can spend ​$.40 How many of this type of fish can you buy for your​ aquarium?

Answer 1

I believe your question contains an error. I suspect the money you have to spend is either $4.00 or $40.00 Otherwise your 40 cents would buy about 1/8 of a fish!

Using $4:

(No. of fish) x (Fish unit price) = Amount spent

or

No. of fish = (Amount spent)/(Fish unit price)

No. of fish = 4.00/3.19

No. of fish = ~ 1.25 - so you cam buy only 1 fish

Using $40

No. of fish = (Amount spent)/(Fish unit price)

No. of fish = 40.00/3.19

No. of fish = 12.5 - so you could buy 12 fish