2704*48 = 129792
129792:32=4056
62604-4056=58548
58548+93983=152531
A + b + c = 20
6a + 2b + c = 96
5a +b = 76
b = 76 - 5a > 0 => a ≤ 15
a + (76 - 5a) + c = 20
c = 4a - 56 > 0 => a > 14
a = 15, b = 1, c = 4
100+5=105%
100+10=110%=1,1
105*1,1=115,5%
115,5-100=15,5%
Ответ: 15,5%