так как mn = 3/5 nk, то:
nk + 3/5nk = 48
8/5nk = 48
nk = 48 : 8/5
nk = 48 *5/8
nk = 6*5
nk = 30
mn = 48 - 30 = 18
ответ: 18
так как mn = 3/5 nk, то:
nk + 3/5nk = 48
8/5nk = 48
nk = 48 : 8/5
nk = 48 *5/8
nk = 6*5
nk = 30
mn = 48 - 30 = 18
ответ: 18