Buffer problem

Can someone please explain what I’m missing here. The question asks what is the ph of a solution that contains 10 times the concentration of acetic acid as sodium acetate. The pka of acetic acid is 4.8. Wouldn’t the ratio be 10/1 but the problem shows 1/10. However, the equation is a/ha. Thank you.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: MCAT Study Question Q&A Source Type: forums