When a seam is backstitched it is stronger (it can stand an additional 10 pounds of pull). If the stitches are closer together (say setting 1 rather than setting 3), the stitch will stand an additional 6 pounds of pull. Suppose a sewer used close stitches and backstitched. Which of the following additional pounds of pull would indicate there is no interaction between the two techniques?
A) 16
B) 10
C) 6
D) 4.

Question

Quizplus · Accepted Answer

The absence of interaction between the two techniques means their effects are additive. Backstitching adds 10 pounds, and close stitches add 6 pounds, totaling 16 pounds.

When a Seam Is Backstitched It Is Stronger (It Can