Question

A worker at a local aquarium is instructed to estimate the population of anchovies in the tank. She catches 140 anchovies, marks them with special paint, and returns them to the tank. Then she catches 410 anchovies and finds that 14 of them are marked. To the nearest whole number, what is the best estimate for the anchovy population?

Answer 1

suppose i ve understood it correct you can use the rule of 3 simple and write in this way

from 410 anchovies finds 14 marked
from x finds 140 marked so cross multiplie and calcule the x value

x = 140 *410 / 14 = ?

hope helped understandably