Question

Ling is twice as old as her sister. The sum
of their ages is 42 years. How old is each?

Answer 1

Ling is 28 , her sister is 14

Explanation:

let the sister's age be x then Ling is 2x , so

x + 2x = 42

3x = 42 ( divide both sides by 3 )

x = 14

Then

Ling is 28 and her sister is 14