Odpowiedź:
1.
SM= I-E
SM= 15 500-11 800= 3 700
WSM= (SM:L)*1000
WSM= (3 700 : 38 411 148)*1000= 0,09%o
2.
PN= U-Z
PN= 11 790 - 12 969 = -1179
SM= I-E
SM= -1700
PR= PN+SM
PR= -1179 +(-1700)= - 2879
WPR=(PR:L) *1000
WPR= (-2879: 1 181 533)*1000= -2,43%o
