Question

Riley is 3 years older than his sister. Which of the following expressions shows the sum of their ages if s represents Riley's sister's age?

Answer 1

if s is the Riley`s sister`s age and Riley is 3 years older so Riley`s age is:
s/3 so the sum of their ages is:
s + s/3 = 4s/3 :)))
i hope this is helpful
have a nice day