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nekit [7.7K]
3 years ago
10

There are

Mathematics
1 answer:
ehidna [41]3 years ago
4 0
Yesterday, 1/4 of 80 =20 gave their speeches, so there are 80-20=60 students left.
Today, 2/5 of 60=24 students gave their speeches, so there are 60-24=36 students who still haven't give their speeches
another way to think of it is 80*(1- 1/4)*(1- 2/5)=80*(3/4)*(3/5)=36
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