An athletic director wants to add either tennis or gymnastics to the physical education program at her school. She surveyed the seventh-grade students and eighth-grade students to determine whether they preferred tennis or gymnastics. Some of the data from the survey is listed below. • A total of 255 students were surveyed.

• 120 of the students surveyed are seventh-graders.

• 72 of the seventh-graders surveyed chose tennis.

• 62 of the eighth-graders surveyed chose gymnastics.

She wants to complete the following table to display the data.

When she used the data from the survey to complete the table, what number was correctly recorded in the box with the star?