Question

Thank you for helping

Answer 1

12

Explanation:

the original ratio was 3/5 , so apply that to 20 and 3/5 of 20 is 12

Answer 2

12 students

Explanation:

Ok, so we know that when he asked 5 friends to come 3 of them came.

So let's put that into a probability:

3/5 or .60 if you prefer.

Now, all you have to do is multiply .60 by the possible 20 students:

This gives us 12 students.

Hope this helps :)