10th grade math need ! instant ps ignore my answer

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Ammonia molecules have three hydrogen atoms and one nitrogen atom. how many of each atom arein five molecules of ammonia