Răspuns :
a+b+c=453
c=3b
a=3+b
3+b+b+3b=453
5b=453-3
5b=450
b=450:5
b=90
c=3*90
c=270
a=3+90
a=93
c=3b
a=3+b
3+b+b+3b=453
5b=453-3
5b=450
b=450:5
b=90
c=3*90
c=270
a=3+90
a=93
3 zile => 453 piese
a - nr de piese realizate in prima zi
b - nr de piese realizate in a 2 a zi
c - nr de piese realizate in a 3 a zi
c=3b
a=3+b
a+b+c=453
3+b+b+3b=453
5b=450
b=90
a=93
c=120