Assuminhg the ark has a shoe-box (cuboid) shape it´s volume would be:
We have this three measurements (
) and it can be as simple as replacing them in the equation and solving but they are in all in 
. We will convert them to 
because the problem requires the answer in 
. In order to do this we will use the given equivalences:
and another one:
First we will convert from cubits to palms:
now from 
to 
:
now from to :
We can calculate the Volume now like this:
The volume of trhe ark would be 
Kyle, d = rt, right? This means that t = d/r. If we call the rate of the current c, then her rate upstream is hindered by the current and is 3 - c. Downstream is 3 + c. The total time is 6 hours... 5/(3 - c) + 5/(3 + c) = 6 Once we put everything over the same denominator, we don't need it anymore. 5(3 + c) + 5(3 - c) = 6(3 - c)(3 + c) 15 + 5c + 15 - 5c = 54 - 6c2
30 = 54 - 6c26c2 = 24c2 = 4c = 2 2 mph
First, the ratio is 3:5. which means 3 redfish for every 5 bluefish. Since there are 20 bluefish, that means that is 4x more than 3:5. The total number of redfish are 12.
Either B or C should work. I would go with B, though.
