The question is incomplete as it is missing the length of the book spine and length of the staple.
Assume the question goes thus :
Elena is binding a small booklet with a spine that is 15 inches long. She uses staples that are 0.5 -inch long. If she puts the staples end-to-end through the booklet, without gaps or overlaps between them, how many staples would it take to bind the booklet?
Answer:
30 staples
Explanation:
Given that:
Length of book spine = 15 inches
LENGTH of staple = 0.5 inch
Since it is assumed that staples are applied end-to-end on the book without gaps ; the number of staples which will be used is ;
Length of book spine / length of staple
= 15 inches / 0.5 inch
= 30 staples