Question

Daca Ionel ar avea cu 73 de nuci mai multe , iar Aurel cu 25 mai putine decat are , atunci cei doi ar avea acelasi numar de nuci . Cate nuci are fiecare , daca au acum , impreuna , 388 de nuci ?

Answer 1

a=ionel
b=aurel
a+b=388 ⇒a=388-b
a+73=b-25
388-b+73=b-25
461-b=b-25
2b=486⇒b=243 (Aurel)
a=388-b=145 (Ionel)

Answer 2

x= Ionel
y=Aurel

x+73=y-25  => x=y-25-73=y-98
x+y=388

y+y-98=388
2y=388+98
2y=486
y=486:2
y=243  => x=243-98=145

Ionel are 145 nuci, iar Aurel are 243