Question

Булочка стоит 8 рублей, а бублик на 3 руля дешевле. Купили 5 булочек. Какова стоимость покупки? Сколько бубликов можно было бы купить вместо булочек? Реши задачу, заменив число 8 числом 6, а число 3 числом 1.

Answer 1

6-1=5(руб) - стоит бублик
6*5=30(руб)- цена булочек
30+5=35(руб) - стоимость покупки
30:5 = 6 (буб) - можно было купить

Answer 2

1)8-3=5
5*8=40
40:5=8
2)6-1=5
6*5=30
30:5=6

Answer 3

Problem Analysis

To solve this problem, we need to determine the total cost of buying 5 buns and calculate how many bagels could have been purchased instead. We are given that a bun costs 8 rubles and a bagel is 3 rubles cheaper than a bun. We can use this information to find the solution.

Solution

Let's start by calculating the cost of buying 5 buns. Each bun costs 8 rubles, so the total cost of 5 buns would be 5 * 8 = 40 rubles.

Next, we need to determine how many bagels could have been purchased instead of the buns. We know that a bagel is 3 rubles cheaper than a bun. So, if a bun costs 8 rubles, a bagel would cost 8 - 3 = 5 rubles.

To find out how many bagels could have been purchased with the same amount of money, we divide the total cost of the buns (40 rubles) by the cost of a bagel (5 rubles). This gives us 40 / 5 = 8 bagels.

Therefore, the total cost of the purchase is 40 rubles, and instead of buying 5 buns, it would have been possible to buy 8 bagels.

Replacing Numbers

If we replace the number 8 with 6 and the number 3 with 1, the problem becomes: "A bun costs 6 rubles, and a bagel is 1 ruble cheaper. If 5 buns were bought, what would be the total cost of the purchase? How many bagels could have been purchased instead?"

Using the same logic as before, we can calculate the total cost of buying 5 buns: 5 * 6 = 30 rubles.

We can also determine how many bagels could have been purchased instead: 30 / (6 - 1) = 30 / 5 = 6 bagels.

Therefore, if the bun costs 6 rubles and the bagel is 1 ruble cheaper, the total cost of buying 5 buns would be 30 rubles, and it would have been possible to buy 6 bagels instead.

I hope this helps! Let me know if you have any further questions.