Răspuns :
A = florile vandute in prima zi
B = florile vandute in a doua zi
A+B=81
B+61=A
A |---|+61
B |---|
81-61=20
20:2=10 (B)
10+61=71 (A)
10+71=81
B = florile vandute in a doua zi
A+B=81
B+61=A
A |---|+61
B |---|
81-61=20
20:2=10 (B)
10+61=71 (A)
10+71=81