A pen costs 7 times as that of a pencil. If raju buys 3 pencils and 2pen what is the cost of pen and pencil

If the pencil costs x, then the pen costs 7x

The rest of the posting makes no sense. I think you left out an amount somewhere.

$23

To find the cost of the pen and pencil, we need to determine the cost relationship between them. We are given that a pen costs 7 times as much as a pencil.

Let's assume the cost of a pencil is P rupees.
Therefore, the cost of the pen would be 7P rupees.

Now, Raju buys 3 pencils and 2 pens.
The total cost of the pencils would be 3 * P, or 3P rupees.
The total cost of the pens would be 2 * 7P, or 14P rupees.

To find the cost of the pen and pencil, we add the costs of the pencils and pens:
Total cost = Cost of pencils + Cost of pens
Total cost = 3P rupees + 14P rupees
Total cost = 17P rupees

Therefore, the cost of buying 3 pencils and 2 pens is 17P rupees.