Răspuns :
a+b+c=120
a=b+30
c=b+12
b+30 +b+b+12 = 120
3b =120 -42
3b=78
b=78:3 = 26 kg
a=b+30 a=26 +30 = 56 kg
c=b+12 c=26 +12 = 38 kg
a=b+30
c=b+12
b+30 +b+b+12 = 120
3b =120 -42
3b=78
b=78:3 = 26 kg
a=b+30 a=26 +30 = 56 kg
c=b+12 c=26 +12 = 38 kg
a |----------|---30---| }
b |----------| } 120
c |----------|--12--| }
30 + 12 = 42
120 - 42 = 78
78 : 3 = 26 ( b )
a = 26 + 30 = 56
c = 26 + 12 = 38
verificare : 56 + 26 + 38 = 120 kg
b |----------| } 120
c |----------|--12--| }
30 + 12 = 42
120 - 42 = 78
78 : 3 = 26 ( b )
a = 26 + 30 = 56
c = 26 + 12 = 38
verificare : 56 + 26 + 38 = 120 kg