One shop is selling 26 pens for रु 234 and the other shop is selling 19 pens for रु 152.

Answer

To determine which shop is selling pens at a lower price, we will calculate the price of one pen from each shop.

### Step-by-Step Solution:

1. **Calculate the price of one pen from the first shop:**
- The first shop sells 26 pens for Rs. 234.
- To find the price of one pen, we divide the total cost by the number of pens:
\[ \text{Price per pen in first shop} = \frac{234}{26} \]
- Performing the division:
\[ \frac{234}{26} = 9 \]
- Therefore, the price of one pen in the first shop is Rs. 9.

2. **Calculate the price of one pen from the second shop:**
- The second shop sells 19 pens for Rs. 152.
- To find the price of one pen, we again divide the total cost by the number of pens:
\[ \text{Price per pen in second shop} = \frac{152}{19} \]
- Performing the division:
\[ \frac{152}{19} = 8 \]
- Therefore, the price of one pen in the second shop is Rs. 8.

3. **Compare the prices:**
- From the first shop, the price of one pen is Rs. 9.
- From the second shop, the price of one pen is Rs. 8.
- Since Rs. 8 is less than Rs. 9, the second shop sells pens at a lower price.

4. **Conclusion:**
- The second shop is selling pens at the least price.