Question

`12%` of the student population in a school are left-handed. In a classroom of `25` students, how many are left-handed and how many are right-handed?

Answer 1

`12%` or `3/25` of the students are left-handed.

`88%` or `22/25` of the students are right-handed.

Explanation:

`12%=12/100`

Both `12` and `100` are divisible by `4`. Simplify `12/100` by dividing the numerator and denominator by `4`.

`(12-:4)/(100-:4)=`

`3/25`

`3/25` of the students are left-handed.

The percentage of all students is `100%`. The percentage of right-handed students is:

`100%-12%=88%`

`88%=88/100`

Simplify `88/100` by dividing the numerator and denominator by `4`.

`(88-:4)/(100-:4)=`

`22/25`

`88%` or `22/25` students are right-handed. Therefore, the majority of students are right-handed.

Answer 2

`=3/25`

Explanation:

1. The left-handed students is given at 12%. This can be interpreted in fractional form as;
   `12/100`
2. Find the factors of these numbers to reduce the fraction to its lowest form.
   `12/100=(cancel((4))(3))/(cancel((4))(25))`
   This mean that 3 out of 25 students are left-handed.
3. Therefore, 22 of these students are right-handed.