Miles will read for 4 hours because 24 x (1/6) = <<24*(1/6)=4>>4
He will read each type for 1 and 1/3 hours because 4 / 3 = 1 and 1/3
He will read 28 pages of novels because 21 x (1 and 1/3) = 28
He will read 40 pages of graphic novels because 30 x (1 and 1/3) = 40
He will read 60 pages of comic books because 45 x (1 and 1/3) = 60
He will read 128 pages in total because 28 + 40 + 60 = <<28+40+60=128>>128
#### 128