a)
$PTK = 12 + 4.1 = 16(đvC)$
b)
$PTK = 1.1 + 14.1 + 16.3 = 63(đvC)$
c)
$PTK = 39.1 + 55.1 + 16.4 = 158(đvC)$
d)
$PTK = 35,5.2 = 71(đvC)$
e)
$PTK = 16.3 = 48(đvC)$
f)
$PTK = 1.2 + 16.1 = 18(đvC)$
g)
$PTK = 40.1 + 16.2 + 1.2 = 74(đvC)$
h)
$PTK = 24.3 + 31.2 + 16.8 = 262(đvC)$