3)
m=mama, f=fata, t=tata
m /---/---/---/---/
f /---/
t /---/---/---/---/ +5
total 86
86-5=9segmente
1segment=81:9=9
m = 4x9 = 36 ani
f = 9 ani
t = 36+5 = 41 ani
total 36+9+41=86
4)
1t......3s.......47lei / x2
2t......5s.......89lei
2t...6s....94lei
2t...5s....89lei / le scadem
6s-5s=94-89lei
1s=5lei (sosete)
inlocuim valoarea sosetelor in prima relatie:
1t+3s=47lei
1t+3x5lei=47lei
1t=47-15
1t=32lei
proba:
1t+3s=47lei
1x32+ 3x15=47lei
