Lena can knit 14 square inches of a blanket in 3 1/2 hours. Find the number of square inches knit per hour and the number of hours spent knitting per square inch.

Answer 1

To find the number of square inches knit per hour, divide the number of square inches knit by the number of hours spent knitting: 14 square inches / 3.5 hours = <<14/3.5=4>>4 square inches/hour.
To find the number of hours spent knitting per square inch, divide the number of hours spent knitting by the number of square inches knit: 3.5 hours / 14 square inches = <<3.5/14=0.25>>0.25 hours/square inch. Answer: \boxed{4 \, \text{square inches/hour}} and \boxed{0.25 \, \text{hours/square inch}}.