Question

The ages of Edna,Ellie,and Elsa are consecutive integers. The sum of their ages is 120. What are their ages?

Answer 1

consecutive integers are 1 apart
we can represent their ages as
x,x+1,x+2
so the sum is adding them all
the sum is 120

x+x+1+x+2=120
3x+3=120
minus 3 both sides
3x=117
divide both sides by 3
x=39
x+1=40
x+2=41

their ages are 39,40,41

Answer 2

x+x-1+x+1 =120

3x=120

x=40

40-1=39

40+1 =41

39 +40 +41 = 120

ages are 39 40 & 41