Question

Julia is five years older than her sister Babs, and their ages add up to 31. How old is Babs? A) 10 B)13 C)16 D)19

Answer 1

B)13 if you add 13+18+31 so that means babs is 13 and julia is 18

Answer 2

Babs=x
Julia=x+5
X+x+5=31
Solve for x
2x=31-5
2x=26
X=26/2
X=13 years old (babs age)