Game wardens use experiments to help determine the number of fish in a lake. Suppose 80 fish are caught,tagged, and released back into the lake. Two weeks later 120 fish are caught, 3 of which are found to have tags. Using this information, estimate the number of fish in the lake.

Question

anonymous · Answer

3200
600
120
280

sasogeek · Answer

well if the first 80 caught were tagged and only 3 of that number were caught out of the 120 the second time... I don't know this for sure if it's a formula or anything, but logically I'd say that to estimate the total number of fishes in the lake, for every 120 fishes caught, there'll be 3 fishes that are tagged, distribute that over 80 tagged fishes and you have your estimated number of fishes.

(80/3) * 120

sasogeek · Answer

@ganeshie8

anonymous · Answer

So would it be the first one?

anonymous · Answer

I'm not very good in math sorry

sasogeek · Answer

Like I said, I'm not sure myself, but year I'd go for the first one.

sasogeek · Answer

@myininaya

anonymous · Answer

@adajiamcneal @DARTHVADER2900 @iGreen @itsthatguy @KendrickLamar2014

adajiamcneal · Answer

the answer is 3,200 because 120 times 80 = 9,600 divided by 3 equals 3,200

mathslover · Answer

Let us keep it straight and simple.

Use ratio : 

original caught / total = tagged caught (II time) / total caught (II time)

80 / x = 3 / 120 

x = 80 * 120 / 3

x = 3200

So, A looks correct.

anonymous · Answer

Yay! Thanks everyone!

adajiamcneal · Answer

np