Question 1 : In a team of $11$ players the age of the captain is $26$ and that of the wicket keeper is $3$ years more than the captain. If the average of the ages excluding the captain age and the wicket keeper age is $1$ years less than that of the whole team. what is the average age of the team?
Let $x$ be the average age of the team members. Let $y$ be the average age, excluding the captain and the wicket keeper. Let $T$ be the total of all the ages. Then you have an equation relating $T$ and $x$; an equation relating $x$ and $y$; and an equation relating $T$ and $y$. Write them all down and manipulate until you have a solution for $x$. Go ahead, get started, come back for more advice if you get stuck (or post the answer if you can get it).