Răspuns :
I zi /---/---/
IIzi /---/
IIIzi/---/-17
IVzi/---/---/+57
628+17=645
645-57=588
588/6=98 (II)
98*2=196(I)
98-17=81(III)
98*2+57=253(IV)
V= 196+98+81+253=628
a= nr.piese ziua 1, b=nr.piese ziua 2, c=nr.piese ziua 3, d-nr.piese ziua 4
a+b+c+d=628
a=2*b
c=b-17 de unde b=c+17
d=a+57
a=2*b=2*(c+17)=2*c+34
d=2*c+34+57=2*c+91
a I-----I-----I+34
b I-----I+17
c I-----I
d I-----I-----I+91 } 628
valoarea celor 6 segmente egale va fi 628-(34+17+91)=628-142=486
486 :6=81 valoarea unui segment
c=81 piese in a treia zi
b=81+17=98 piese a doua zi
a=2*81 +34= 162+34=196 piese in prima zi
d= 81*2+91=162+91=253 piese in a patra zi
proba: 196+98+81+253=628
a+b+c+d=628
a=2*b
c=b-17 de unde b=c+17
d=a+57
a=2*b=2*(c+17)=2*c+34
d=2*c+34+57=2*c+91
a I-----I-----I+34
b I-----I+17
c I-----I
d I-----I-----I+91 } 628
valoarea celor 6 segmente egale va fi 628-(34+17+91)=628-142=486
486 :6=81 valoarea unui segment
c=81 piese in a treia zi
b=81+17=98 piese a doua zi
a=2*81 +34= 162+34=196 piese in prima zi
d= 81*2+91=162+91=253 piese in a patra zi
proba: 196+98+81+253=628