21.4k views
4 votes
Christiana wants to buy some miniature goldfish. She reads that a 9-gallon aquarium is a right size for 3 miniature goldfish. The graph represents this relationship.

Christiana wants to buy some miniature goldfish. She reads that a 9-gallon aquarium-example-1

1 Answer

5 votes

The problem says the right size for 3 miniature goldfish is a 9-gallon aquarium, then the ratio is:


\frac{3\text{ miniature goldfish}}{9-\text{gallon aquarium}}

If we divide the numerator and the denominator by 3, we will obtain:


(3/3)/(9/3)=(1)/(3)

Thus, we need 3-gallon for each 1 miniature goldfish, then in the options we can see two that apply:


(6)/(18)=(6/6)/(18/6)=(1)/(3)

Then (6,18) is one of the options

The other one is (1,3) because it fits the ratio.

Answer: option A. (6,18) and option D. (1,3)

User Kenny Loveall
by
7.2k points