Question

Veveritele Miti Piti si Riti au adunat alune. Daca Miti si Piti au impreuna 30 de alune , Piti si Riti au impreuna 38 de alune , iar Miti si Riti au impreuna 32 de alune, aflati cate alune are fiecare. Va rog este urgent !!

Answer 1

M+P=30
P+R=38
M+R=32

M+P+P+R+M+R=30+38+32
M+P+P+R+M+R=100
(M+P+R)+(M+P+R)=100
doua grupe=100
aflam o grupa
M+P+R=100:2
M+P+R=50 
P+R=30 ( înlocuim)
avem
30+R=50
R=50-30

R=20

P+R=38
înlocum cu R=20
P+20=38
P=38-20

P=18

Înlocuim cu R=20
avem
M+R=32
M+20=32
M=32-20

M=12

Answer 2

M+P=30 alune
P+R=38 alune
M+R=32 alune
____________
2×M+2×P+2×R=30+38+32
2×M+2×P+2×R=100 alune | :2
M+P+R=50 alune
→R=50-30=20 alune
→M=50-38=12 alune
→P=50-32=18 alune