There are 20 students in Mrs. Williams' class, and 1/5 of the class has their own cellphone. Of this group of students, 1/2 of them are allowed to use social media. How many of the students have a cellphone and can use social media?

2

Step-by-step explanation:

Only 1/5 of Miss Williams' class has a cell phone, so we work this out by dividing the number of students by 5

20÷5=4

Out of this group of 4 students, only 1/2 are allowed to use social media

4÷2=2

This means that only 2 pupils have a phone and are allowed to use social media at the same time.

If you need to express this in fraction form, it would be 1/10 of the class