In an aquarium, there are 6 large fish and 8 small fish. Half of the small fish are red.

One fish is selected at random. Find the probability that it is a small, red fish.
Write your answer as a fraction in simplest form.

1 answer

To find the probability of selecting a small, red fish from the aquarium, we first need to determine the number of small, red fish and the total number of fish in the aquarium.

  1. Total number of small fish: There are 8 small fish in total.

  2. Number of small, red fish: Half of the small fish are red. Therefore, the number of small, red fish is: \[ \text{Number of small red fish} = \frac{1}{2} \times 8 = 4 \]

  3. Total number of fish in the aquarium: There are 6 large fish and 8 small fish, so the total number of fish is: \[ \text{Total fish} = 6 + 8 = 14 \]

  4. Probability of selecting a small, red fish: The probability \( P \) of selecting a small, red fish can be calculated using the formula: \[ P(\text{small red fish}) = \frac{\text{Number of small red fish}}{\text{Total number of fish}} = \frac{4}{14} \]

  5. Simplifying the fraction: We can simplify \( \frac{4}{14} \): \[ \frac{4}{14} = \frac{2}{7} \]

Thus, the probability that a randomly selected fish is a small, red fish is \( \frac{2}{7} \).