[tex]\text{Find how many month it'll take to reach 175k}\\\\\text{We know he had a initial balance of 325k}\\\\\text{He withdraws 5k each month}\\\\\text{If you logically think about it, if you subtract 325,000 by 175,000,}\\\text{you would be taking 150,000 from your account \\}\\\text{Since we know this, just divide 150,000 by 5,000}\\\\150,000\div5,000=30\\\\\text{It would take 30 months}\\\\\boxed{\text{30 months}}[/tex]