Mama went to the store with Misha and Grandma Raya. The goal is to find out in which store it is more profitable to buy groceries. Consider the prices in the table without discounts. Calculate the total cost of the purchase in each store.

Let's calculate the total cost for each store:

1. "Pyaterochka" store:

• Bagel: 30 rubles
• Black bread: 27 rubles
• Kefir: 33 rubles
• Dumplings: 130 rubles
• Sausages: 283 rubles
• Pryaniki: 56 rubles
• Total: 30 + 27 + 33 + 130 + 283 + 56 = 559 rubles

2. "Magnit" store:

• Bagel: 33 rubles
• Black bread: 28 rubles
• Kefir: 39 rubles
• Dumplings: 127 rubles
• Sausages: 275 rubles
• Pryaniki: 59 rubles
• Total: 33 + 28 + 39 + 127 + 275 + 59 = 561 rubles

3. "Pobeda" store:

• Bagel: 27 rubles
• Black bread: 30 rubles
• Kefir: 29 rubles
• Dumplings: 132 rubles
• Sausages: 226 rubles
• Pryaniki: 45 rubles
• Total: 27 + 30 + 29 + 132 + 226 + 45 = 489 rubles

Conclusion:

The purchase is most profitable in the "Pobeda" store, as the total cost of all products is the lowest, 489 rubles.

Answer: The most profitable purchase will be made in the "Pobeda" store.