<prompt> Human: I know there is a recommended debt-to-income ratio for people who want to put down a down payment and take out a mortgage, but is there a similar ratio to use for those of us who want to figure out what we can afford to pay in monthly rent? And how do student loans play a role in determining that?I am currently a third year law student who will be graduating in May. I plan to move back into my parents house for the summer to study for the bar, and then find an apartment with my boyfriend also a 3L in August when I start work. I have started looking online for places to live, but I dont really know which ones are within my price range.My salary will be k, not including bonuses which could be an extra -k each year, depending on my billable hours. When I graduate, Ill have about ,000 of student loan debt. I dont have any car payments, and I also dont have any credit card debt. I hope to pay off my loan within 10-15 years or so while still enjoying a reasonable standard of living.What is the best formula to use to figure out an appropriate monthly rent expense? We would love to live in a high-rise apartment downtown, but I know I need to be realistic about which places we should be looking at. EDIT: removed numbers for privacys sake  <response>: How long is a piece of string? 