Răspuns:
I+C=150
C+G=127
I+G=143
2I+2C+2G=150+127+143=420
I+C+G=420:2=210
ne uitam la a doua relatie ,unde avem Crisi si George,lipseste Ionut:
I=210-127=83
ionut are 83
aflam cate are Cristi:
150-83=67
cristi are 67
aflam cate are George:
127-67=60
v:ionut 83+george 60+cristi 67=210
R=ionut83