Question

sanda are tot atatea globulete cate au Maria si Irina impreuna. Irina are cu 12 globulete mai putine decat Maria . Impreuna, toate trei fetele au 64 de globulete. Cat globulete are fiecare fata . As vrea sa mi faceti aceasta problema prin segmente va rog frumos cine raspunde primul dau coroana si vreau sa mi explice ! Multumesc si va rog sa ma ajutati !

Answer 1

s+m+i=64
s=m+i=>s=m+m-12=>s=2m-12
i=m-12
2m-12+m+m-12=64
4m=64+12+12
m=88:4
m=22 globulete are Maria
i=22-12=10 globulete are Irina
s=2x22-12=32 globulete are Sanda

Answer 2

|--|--|--|--| + |--|--|--|--| =64 Sanda+ (Maria +Irina )=64 64:8=8(reprezinta fiecare segment) 8×4=32( globuri Sanda ) 64-32=32(Maria+Irina) 32-12=20 20:2=10(globuri Irina) 10+12=22(globuri Maria)