Problem: The cost of 15 pens is ₹ 60 3/5. Find the cost of 1 pen.

Solution:

To find the cost of 1 pen, we need to divide the total cost of 15 pens by 15.

We can first convert the mixed fraction into an improper fraction:

₹ 60 3/5 = ₹ (60 × 5 + 3)/5 = ₹ 303/5

Now, we can divide ₹ 303/5 by 15:

Cost of 1 pen = (₹ 303/5)/15 = ₹ 303/5 × 1/15 = ₹ 303/75 = ₹ 4 3/4

Therefore, the cost of 1 pen is ₹ 4 3/4.

Explanation:

When we are given the cost of a certain number of items and we need to find the cost of one item, we can use the formula:

Cost of 1 item = Total cost/Number of items

In this problem, we are given the total cost of 15 pens, which is ₹ 60 3/5. We can convert the mixed fraction into an improper fraction and then divide by 15 to get the cost of one pen.

It is important to simplify the fraction as much as possible to get the answer in the simplest form. Therefore, we divide 303 by 75 to get the mixed fraction of ₹ 4 3/4 as the final answer.

Answer: The cost of 1 pen is ₹ 4 3/4.

Answer: 4.75 Rupees