Brenda caught three less than twice as many fish as Olga. Together they caught 33 fish. How many fish did Olga catch?	Choose the correct choice from the following choices.
A) 21	B) 20	C) 13	D) 12	E) 15
If Olga = f, Brenda= 2(f)-3   Brenda+Olga =33   (2f-3)+(f) =33   2f+f-3+3=33+3   3f=36   f=12   Olga has 12 fish, the answer is 12)
<result>D</result>
Brenda caught three less than twice as many fish as Olga. Together they caught 33 fish. How many fish did Olga catch?