500
Paco's Apparel sells undershirts in packs of 16. The store's competitor, Diane's Basics, sells undershirts in packs of 20. If both stores sold the same number of undershirts yesterday, what is the smallest number of undershirts each could have sold?
What is 80? (The least common multiple of 16 and 20 is 80. That means that the smallest number of undershirts sold was 80, because 5 packages of 16 undershirts from Paco's Apparel would have been 80 undershirts in total and 4 packages of 20 undershirts from Diane's Basics would have been 80 undershirts in total)