Question

In trei magazine sunt 334 kg de zahar.Ce cantitate de zahar se afla in riecare magazin daca in al doilea sunt cu 57 kg mai multe decat in primul iar in al treilea cat primele doua la un loc .Prin metoda grafica.

Answer 1

a  /---------------/
b  /---------------/--57--/
c  /---------------/----------------/--57--/
334-[57*2]=220
334-114=220
220/4=55
a=55
b=55+57
b=112
c=112+55
c=167
55+112+167=334

Answer 2

a+b+c=334
b=a+57
c=a+b=a+a+57=2a+57
a+a+57+2a+57=334
4a=334-114
a=220:4
a=55 
b=a+57=55+57=112     b=112
c=2a+57=2*55+57=167     c=167
l-------l a=55
l-------l---------l b=55+57
l-------l-------l----------l c=2*55+57=167