The total amount of money that was spend, was $15
To solve this, ieach goldfish cost $3. Anita buys 2. Then Anita spend 2 * $3 = $6
Marco buy 3 fish. He spend 3 * $3 = $9
Then the total is: $6 + $9 = $15
Hidden question:
How many Goldfish dis Marco and Anita buy in all?
The answer is the sum of the goldfish of both: 3 + 2 = 5