Let the total number of students be x
1/5 of the students does not know how to drive
Therefore, the number of students that does not know to drive is
1/5 * the total number of students
Since the total number of students is x
Then,
1/5 * x
= x /5
Therefore, x/5 of the total students does not know how to drive
The question says find the passage of students that know how to drive
Number of students that can drive = Total number of students - Number of students that cannot drive
Number of students that can drive = x - x/5
Number of students that can drive = 5x - x / 5
Number of students that can drive = 4x/5
To calculate the percentage
Percentage of students that can drive = Number of students that can drive / total number of students x 100
Percentage = 4x/5 / x * 100
Percentage= 4x / 5 * 1/x * 100
Percentage = 4/5 * 100%
Percentage = 0.8 x 100%
Percentage = 80%
The answer is 80%
The percentage of students that can drive is 80%