The sales department of Trade Fort was short of employees, and the marketing department was short of funds for one of its new projects.

The sales department of Trade Fort was short of employees, and the marketing department was short of funds for one of its new projects. Both teams came to an agreement in which the sales department lent funds to the marketing team and some members of the marketing team helped the sales team with its project. Both teams managed to get close to their requirements but not meet them entirely. Which of the following concepts does this scenario illustrate?