Question

Suma a 5 numere consecutive impare este 75. Afla numerele. prin metoda figurativa

Answer 1

a+b+c+d+e=75
a /......./
b /......./+2
c /....../+4                    ⇔75
d /....../+6
e /....../+8
5 parti+2+4+6+8=75
5 parti+20=75
5 parti=75-20=55
1 parte=50:5=11
a=11
b=11+2=13
c=13+2=15
d=15+2=17
e=17+2=19
11+13+15+17+19=75