Răspuns :
c+s+m=3350 (cremene+scoici+melci)
c+s=1510
s+m=2190
1510+m=3350
m=3350-1510
m=1840 melci
c+2190=3350
c=3350-2190
c=1160 cremene
s+1840=2190
s=2190-1840
s=350 scoici
V: 1160+350+1840=3350
c+s=1510
s+m=2190
1510+m=3350
m=3350-1510
m=1840 melci
c+2190=3350
c=3350-2190
c=1160 cremene
s+1840=2190
s=2190-1840
s=350 scoici
V: 1160+350+1840=3350
a=cremene
b=scoici
c=melci
a+b+c=3350=>1510-c+2190=3350==>3700-c=3550==>c=150
a+c=1510=>a=1510-c=>1510-150=>a=1360
b+c=2190=>b=2190-c=>2190-150=>b=2040
V: 1360+2040+150=3550
b=scoici
c=melci
a+b+c=3350=>1510-c+2190=3350==>3700-c=3550==>c=150
a+c=1510=>a=1510-c=>1510-150=>a=1360
b+c=2190=>b=2190-c=>2190-150=>b=2040
V: 1360+2040+150=3550