Question

The total number of ducks in a zoo is known to be 4,109. Of these 4,109 ducks, 960 have been marked. If you catch 1,100 of these ducks, how many would you expect to be marked? A.225 B.257 C.189 D.143

Answer 1

A. 225. This is an estimate.

Answer 2

960 : 4109
x : 1100


`4109x = 1056000 \\ x = 256.997`
After rounding off, Answer is 257.

Hope this helps. - M