Răspuns:
a+b+c=100
a=b
c=a+b
c+c=100=>c=100:2=>c=50 kg cumpara a3a gospodina
100-50=50 kg rest
50:2=25 kg cumpara prima si a2a gospodina
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a-b=40
a:b=5=>a=5b
5b-b=40=>b=40:4=>b=10
a=5×10=50
b.a.I__I
I__I__I__I__I__I } 40
5-1=4 segm egale
40:4=10 (b)
10×5=50 (a)
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1 intreg si 1/2=3 lei
(1×2+1)/2=3 lei
3/2=3 lei
3/3 = un intreg , o paine
3/2.................3 lei
3/3....................x
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x=3/3×3:3/2=6/3=2 lei costa o paine
