Răspuns :
148-100=48 (in al treilea autocar)
97-48=49 (in al doilea autocar)
100-49=51 (in primul autocar)
97-48=49 (in al doilea autocar)
100-49=51 (in primul autocar)
a+b+c=148 copii
a+b=100
b+c=97
100+c=148
c=148-100
c=48
b+48=97
b=97-48
b=49
a+49=100
a=100-49
a=51
Verificare:
51+49+48=148
a+b=100
b+c=97
100+c=148
c=148-100
c=48
b+48=97
b=97-48
b=49
a+49=100
a=100-49
a=51
Verificare:
51+49+48=148