Given :
Bob is 4 years younger than Ann and 5 years older than Frank. Alice is with 20 years 5 years older than Frank.
To Find :
The age difference (in years) between the oldest and youngest person.
Solution :
Let, age Bob is x.
Age of Ann = x + 4.
Age of Frank = x - 5.
Age of Alice = 20 .
It is given that Alice is 5 years older than Frank.
x - 5 = 20 - 5
x = 20
So, age of Ann = 20 + 4 = 24
Age of Bob = 20
Age of Frank = 15
Therefore, age difference between oldest and youngest person is 24 - 15 = 9 years.
Hence, this is the required solution.
