Răspuns :
x=nr. baietilor/y=nr. fetelor/z=nr.adultilor
x+y+z=54
cum x=2y si z=y-6=>y+2y+y-6=54/ 4y=60 y=15,x=30,z=9
x+y+z=54
cum x=2y si z=y-6=>y+2y+y-6=54/ 4y=60 y=15,x=30,z=9
e +a =54
b /2 =f
f-6 =a
a⇒f
54+6=60
b +f+f =60
b ⇒2* f
2f +f+f =60
60/ 4 =15
f =15
15-6 =9
a =9
15*2= 30
b =30
b /2 =f
f-6 =a
a⇒f
54+6=60
b +f+f =60
b ⇒2* f
2f +f+f =60
60/ 4 =15
f =15
15-6 =9
a =9
15*2= 30
b =30