Answer:
30 students
Step-by-step explanation:
Students who gave a speech yesterday: 1/4*60 = 15 students
Remainig students from yesterday: 60 - 15 = 45 students
Students who gave a speech today: 1/3*45 = 15 students
Students who still haven't given their speeches: 60 - (15 + 15) = 30 students
