Question

The volume of a fish tank is 40 cubic feet. If the density is 0.4fish over feet cubed, how many fish are in the tank?

16

4

100

10

Answer 1

@Directrix help plz

Answer 2

I'm not sure about density.

My instinct is to set up a proportion.

.4 fish is to one cubic foot as total fish in the tank is to 40 cubic feet.

.4/1 = F/40 where F is the total number of fish in the tank

@luka1998 Cross multiply and solve for F. Let's see if the answer makes sense.

Answer 3

.4/1 = F/40

F*1 = .4 * 40

F = .4 * 40

F = ? @luka1998

Answer 4

160

Answer 5

@luka1998 I think you missed the decimal. Try again. 160 is too many fish.

Answer 6

16

Answer 7

Okay. That is what I got.

Let's see if it makes sense. 16 fish in a 40 gallon tank would be a density of 16/40 = .4 fish per cubic foot. So, that sounds correct.

Answer 8

@Directrix thx

Answer 9

You are welcome.

Answer 10

answer is 16 to be clear!!!!