Question

If 12 goldfish are $9 and 6 goldfish are $4.5, how much is 4 goldfish?

a) $2
b) $3
c) $3.5
d) $4

Answer 1

The cost for 4 goldfish is $3, determined by multiplying the unit price of $0.75 per goldfish by 4.

Step-by-step explanation:

We are asked to determine the cost of 4 goldfish given the price of 12 and 6 goldfish. The first given is that 12 goldfish cost $9. This means each goldfish costs $9 divided by 12, which is $0.75 per goldfish. The second given confirms this unit price since 6 goldfish are $4.5, and $4.5 divided by 6 is also $0.75 per goldfish. To find the cost of 4 goldfish, we simply multiply the unit price by 4:

4 goldfish x $0.75/goldfish = $3.00

The correct answer is b) $3, since 4 goldfish would cost $3.00.