Homework Help: Math

Posted by Jay on Monday, July 6, 2009 at 4:43pm.

Each female of a certain species of fish lays 100 eggs each fall and then dies. If only 30% of these eggs mature to become egg-producing females the next year , then how many egg-producing females will descend from a single egg-producing female 2 years after she first lays eggs ?

Math - bobpursley, Monday, July 6, 2009 at 4:46pm
amount=P(1+i)^t

P=100
i=.3
t=2
Math - Marth, Monday, July 6, 2009 at 4:50pm
30% of the 100 eggs from the 1st female will mature, or 30 eggs.

Start: 1 female lays 100 eggs, and 30 mature for the next year

1 year later: 30 females lay 3000 eggs, and 900 mature for the next year

2 years later: 900 females lay 9000 eggs, and 2700 will survive

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