This Application Problem is a part of the Lesson 19, Unit 1, Grade 3. Henrietta works in a shoe store. She uses 2 shoelaces to lace each pair of shoes. She has a total of 24 laces. How many pairs of shoes can Henrietta lace? This problem reviews material from Lesson 18 but intentionally previews 24 ÷ 2, which is used in the first example of the Concept Development.