One pencil costs Rs. 2 and one fountain pen costs Rs. 15. Then find the cost of x pencils and y fountain pens.

Given: One pencil costs Rs. 2 and one fountain pen costs Rs. 15.

To find: Here we have to find the cost of x pencils and y fountain pens.

Solution:

Cost of one pencil = Rs 2

Cost of one fountain pen = Rs 15

So,

The cost of x pencil is = Rs. 2x

The cost of y fountain pen is = Rs. 15y

Therefore,

Total cost = Cost of x pencil $+$ Cost of y fountain pen

Total cost = Rs. 2x $+$ 15y

So, total cost is Rs. 2x $+$ 15y.