The bars in a bar graph can have different breadth.

Sachin scored $35, 67, 99, 0, \text{and} x$  in five innings. His mean score in these five innings was $50$.

Find $x$.

Calculate the mean.

Following data shows the marks obtained by $25$ students in a class test out of $50$ marks. 
$25 29 30 25 40 29 25 30 40 25 33 25 29 48 30 30 30 25 44 33 40 29 48 33 25$ 

How many students secured above the mean mark ?

Following data shows the marks obtained by $25$ students in a class test out of $50$ marks. 
$25 29 30 25 40 29 25 30 40 25 33 25 29 48 30 30 30 25 44 33 40 29 48 33 25$ 

How many students secured exactly the mean mark ?