Question

There are 20 students in your class 3/5 of them pack a lunch which meant that will help you find the number of students in your class who pack a lunch

Answer 1

So 3/5 of 20 is what
'of' means multiply

3/5 of 20 means
3/5 times 20/1=(3*20)/(5*1)=60/5=12/1=12

12 pack a lunch