Question

If the cost of $1$ pen is ₨ $5$ and the cost of $1$ pencil is ₨ $2$. Find the cost of $\mathit{x}$ pens and $\mathit{y}$ pencils together.

Answer 1

Step 1 Writing the given information :

cost of $1$ pen $=$₨ $5$

cost of $1$ pencil $=$ ₨ $2$

Step 2 Finding the cost of $\mathit{x}$ pens and $\mathit{y}$ pencils :

If the cost of $1$ pen is ₨ $5$

Then, the cost of $\mathit{x}$ pens $=\mathit{x}\times 5=$Rs $5\mathit{x}$

And if the cost of $1$ pencil is ₨ $2$

Then, the cost of $\mathit{y}$ pencils $=\mathit{y}\times 2=$Rs $2\mathit{y}$

Step 3 Finding the total cost of all pen and pencils :

Total cost of $\mathit{x}$ pens and $\mathit{y}$ pencils $=$( cost of $\mathit{x}$ pens ) $+$ ( cost of $\mathit{y}$ pencils )

$=5\mathit{x}+2\mathit{y}$

Therefore, Total cost of $\mathit{x}$ pens and $\mathit{y}$ pencils $\mathbf{=}\mathbf{}$₨ $\left(5x+2y\right)$