Answer :
1/4 of 80 is 20 so there's 60 left the second day.
2/5 of 60 is 24.
60-24=36
There are 36 students left after the second day.
2/5 of 60 is 24.
60-24=36
There are 36 students left after the second day.
80 ÷4=20 because 1/4 of them gave speeches.
80-20=60
60÷5=12
12×2=24
60-24=36
80-20=60
60÷5=12
12×2=24
60-24=36