Question

suma a cinci nr consecutive este 40 cel din mijloc este

Answer 1

a + a+1 + a+2 + a+3 + a+4=40
5xa + 10=40
5xa=30
a=6
a+2=8(numarul din mijloc)

Answer 2

A+B+C+D+E=40. A=|---|. B=|---|+1|. C=|---|+1|+1|. D=|---|+1|+1|+1|. E=|---|+1|+1|+1|+1|. 40-1-1-1-1-1-1-1-1-1-1=30. 30:5=6 (A). 6+1=7 (B). 6+1+1=8 (C). 6+1+1+1=9 (D). 6+1+1+1+1=10 (E). Verificare:6+7+8+9+10=13+8+9+10= 21+9+10=30+10=40.