Răspuns:
1)
L=Laura
M=Marius
B=Bogdan
M = 2×143 => M = 286 lei
286 + 143 = 429 lei
B = 576 - 429 => B = 147 lei
2)
Marti = M
Joi = J
M= 67kg - 4 => M = 63kg
J = 63kg : 9 => J = 7k
Suma celor 3 zile:
S = L + M + J => S = 67kg + 63kg + 7kg => S = 137kg de cirese vandute in cele trei zile