Cost of a dozen pens is Rs 180 and cost of 8 ball pens is Rs 56. Find the ratio of the cost of a pen to the cost of a ball pen.

Explanation

To find the ratio of the cost of a pen to the cost of a ball pen, we will follow these steps:

### Step 1: Calculate the cost of one pen.
We know that the cost of a dozen pens (12 pens) is Rs. 180. To find the cost of one pen, we divide the total cost by the number of pens.

\[ \text{Cost of 1 pen} = \frac{\text{Cost of 12 pens}}{12} = \frac{180}{12} \]
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