192
The book "Half Brother" by Kenneth Oppel has approximately 384 pages.
768
9.6
Half of the previous number.
384 percent = 384/100 = 3.84
10% is 38.4; 5%, ie half of that, is 19.2 so add those up and you get 15%...
384
384
147456
384
the percentage of 384 = 38400%