If 78 students represent 30% of the class, what is the total number of students?

The correct answer is 260.

• This is a percentage problem. We are given that 78 students represent 30% of the class. We need to find the total number of students, which represents 100%.
• We can set up a proportion: 30% / 78 = 100% / Total Students.
• Alternatively, find the value of 1%: 1% = 78 / 30 = 2.6 students.
• To find the total number of students (100%), multiply 1% by 100: Total Students = 2.6 × 100 = 260.
• Options (A) 220, (B) 230, and (C) 250 are incorrect calculations.

Therefore, the total number of students in the class is 260.