If Zack's classroom had 22 students when he was absent, then the total students in his class are 22+1 = <<22+1=23>>23
If Tina's classroom has as many students as Maura's then T=M
If Zack's classroom has half the amount of total students between Tina and Maura's classrooms then 23 = 1/2* (T+M )
23 = 1/2*(T+M)
We know from above that T=M, therefore 23 = (1/2) * (M+M) or 23 = (1/2)*2M
23 = M
Because T = M, then T is also T=23.
Between the three classes then we have a total of T+M+Z or 23+23+23=<<23+23+23=69>>69
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