a = (1 + 0,2)x = 1,2x
b = (1 - 0,25)x = 0,75x
0,75x - 100%
1,2x - k %
k = 1,2*100/0,75 = 160
160% - 100% = 60%
ответ: 60%
a = (1 + 0,2)x = 1,2x
b = (1 - 0,25)x = 0,75x
0,75x - 100%
1,2x - k %
k = 1,2*100/0,75 = 160
160% - 100% = 60%
ответ: 60%