Five years ago,the sum of the ages of a father and two sons was $x$ years. Then,after five years,the sum of the ages of all will be $\ldots \ldots \ldots$ years.

$A$ shopkeeper sells $4$ pants and $3$ shirts for Rs. $5000$. The cost of a pair of a pant and a shirt is Rs. $750$. Represent this situation as a pair of linear equations in two variables.

Formulate the following problems as a pair of equations,and hence find their solutions:
$2$ women and $5$ men can together finish an embroidery work in $4$ days,while $3$ women and $6$ men can finish it in $3$ days. Find the time taken by $1$ woman alone to finish the work,and also that taken by $1$ man alone.

Ankita travels $14 \,km$ to her home partly by rickshaw and partly by bus. She takes half an $hour$ if she travels $2 \,km$ by rickshaw and the remaining distance by bus. On the other hand,if she travels $4 \,km$ by rickshaw and the remaining distance by bus,she takes $9 \,minutes$ longer. Find the speed of the rickshaw and of the bus (in $km/h$).

If the sum of two numbers is $15$ and the subtraction is $1,$ then the smaller number of these two numbers is.........

If $7x - 9y = 25$ and $9x - 7y = 23$,then $x + y = \dots$