Answer:
3/10
Step-by-step explanation:
The total amount of surgeonfish in the aquarion is 2/5, but we know that 3/4 of these are yellow tangs.
To find out how much is three quarters of 2/5, we need to multiply these two numbers:
[tex](\frac{3}{4}) (\frac{2}{5} )=\frac{6}{20} =\frac{3}{10}[/tex]
Thus, 3/10 of all the fish are yellow tangs.