Question

1 2 of the fish in Elena's fish tank are guppies. 3 7 of the guppies are red. What fraction of the fish in Elena's tank are red guppies?

Answer 1

The fraction of fish in Elena’s tank that are red guppies = 3/14

Explanation:

The best way to go about this is to select an arbitrary value for the number of fishes in the tank.

Let the total number of fishes in the tank be 84.

Now out of this 85, 1/2 are guppies

The number of guppies fish = 1/2 * 84 = 42

Now, 3/7 of the guppies are red

The number of red guppies is thus 3/7 * 42 = 18 guppies

So the fraction of fishes in the tank which are red guppies will be ; 18/84 = 3/14