Trout are bred in a tank as fish for restaurants.

Twenty trout are caught and each is tagged through the tail then released back into the tank.

A week later, thirty trout are caught and it is found that two of them have a tail tag.

Based on this evidence alone, what estimate can be made of the total number of trout in the tank?

A) 100 B) 300 c) 600 D) 1,200

Question

Trout are bred in a tank as fish for restaurants.

Twenty trout are caught and each is tagged through the tail then released back into the tank.

A week later, thirty trout are caught and it is found that two of them have a tail tag.

Based on this evidence alone, what estimate can be made of the total number of trout in the tank?

A) 100 B) 300 c) 600 D) 1,200

dumbcow · Answer

set up a proportion of total trout to tagged trout for sample and population
$$\frac{X}{20} = \frac{30}{2}$$

dumbcow · Answer

umm can you figure it out from here

dumbcow · Answer

nothing ?

ok x = 300

anonymous · Answer

got it man...thanx a lot