Respuesta :
3 students because 2/3 of 45 is 30 then 4/5 of 15 is 12 so 3 students still haven’t gone
45 x 2/3 = 30
45-30 = 15
15 x 4/5 = 12
15-12= 3
3 have not yet given their speeches.
45-30 = 15
15 x 4/5 = 12
15-12= 3
3 have not yet given their speeches.