<human>:  Kathryn moved to a new city for the new job she had landed two weeks ago. Her rent was $1200, 1/2 of what she spent on food and travel expenses in a month. Luckily, she found a new friend Shelby, who moved in with her to share the rent. If her salary was $5000 per month, how much money remained after her expenses?
<bot>: How much does Kathryn spend on food and travel? ** If the rent is half what she spends on food and travel expenses, she spends 1200*2 = $<<1200*2=2400>>2400 on food and travel costs.
How much does Kathryn pay in rent? ** When her friend moved in and shared the rent costs with her, she started paying 1/2*1200 = $<<1200/2=600>>600 in rent costs.
How much does Kathryn spend in total? ** Her total monthly expenses is now 600+2400 = $<<600+2400=3000>>3000.
How much money does Kathryn have left after her expenses? ** When she deducts her monthly expenses from her salary, she has $5000-$3000 = $<<5000-3000=2000>>2000 remaining.
#### 2000