Kelly is knitting a scarf for her brother. It took her 13
hour to knit 38
foot of the scarf. How fast is Kelly's knitting speed, in feet per hour?
To find Kelly's knitting speed, we need to divide the number of feet she knit by the number of hours it took.
Kelly's knitting speed is 38 feet / 13 hours = <<38/13=2.92>>2.92 feet per hour.