Final answer:
Megan and Jessie worked out a partnership with the other girls who sold lemonade for them, sharing the profits.
Step-by-step explanation:
Megan and Jessie worked out a partnership with the other girls who sold lemonade for them. In this partnership, Megan and Jessie would provide the materials and the recipe for the lemonade, while the other girls would help with the selling and distribution of the lemonade. They would share the profits as agreed upon in the partnership.