300
because 3 x 1 = 3 +00 = 300... make sense?
Answer: (10,9) is the correct answer.
The answer would be 5x+5y
Ell it could be any of these to be perfectly honest but none of these are the answer I believe because none of them give you a 3/4 proportion. So it could be none of the above if thats an answer.