Kerri has a home business making jewelry. It takes 1.5 hours for her to make each bracelet and 3 hours to make each
necklace. Next month she plans to spend 120 hours making jewelry. If she fills a special order for 18 bracelets at the
beginning of the month and spends the rest of the month making necklaces, how many necklaces can Kerri make
during the month?