Charlie buys a bag of chips that contains 16 ¼ ounces of chips. He divides the bag of chips into servings of 1 ¼ ounces each. What is the total number of servings that Charlie can make from his chip bag?
16 ¼ ounces is equivalent to 16 + ¼ = 16.25 ounces.
1 ¼ ounces is equivalent to 1 + ¼ = 1.25 ounces.
Therefore, Charlie can divide the bag of chips into 16.25/1.25 = <<16.25/1.25=13>>13 servings. Answer: \boxed{13}.