Question

за 3 корочки хлеба и 2 кружки молока надо заплатить 20 монет.сколько стоит одна корочка хлеба,если она дешевле кружки молока на 5 монет????(решить не уравнением,2 класс,уравнение еще не проходили)

Answer 1

Дано: хлеб=3к.; молоко=2кр.; 3к.хлеба+2кр.молока=20монет; 1к.хлеба=1кр.молока- 5монет; найти1к.хлеба=?монет; Решение. 1)20-2•5=10монет остаётся, если забрать на сколько больше молоко; 2)10:(2+3)=10:5=2монеты стоит одна корочка хлеба; 3) 2+5=7монет стоит кружка молока. Проверка;3•2+2•7=6+14=20монет; _____ или так 1) 3+2=5частей покупки; 2) 20-5-5=10монет остаётся когда забрали на сколько молоко больше; 3) 10:5частей=2монеты стоит корочка хлеба; 4) 2+5=7монет стоит кружка молока; Ответ: корочка хлеба стоит 2монеты

Answer 2

Problem Analysis

To solve this problem, we need to find the cost of one loaf of bread when it is cheaper than two cups of milk by 5 coins. We are given that 3 loaves of bread and 2 cups of milk cost a total of 20 coins.

Solution

Let's assume the cost of one loaf of bread is x coins. Since the loaf of bread is cheaper than two cups of milk by 5 coins, we can express the cost of two cups of milk as x + 5 coins.

According to the given information, 3 loaves of bread and 2 cups of milk cost a total of 20 coins. We can write this as an equation:

3x + 2(x + 5) = 20

Simplifying the equation:

3x + 2x + 10 = 20

5x + 10 = 20

5x = 10

x = 2

Therefore, the cost of one loaf of bread is 2 coins.

Answer

The cost of one loaf of bread is 2 coins.

Explanation

To solve this problem, we set up an equation based on the given information. We assumed the cost of one loaf of bread as x coins and expressed the cost of two cups of milk as x + 5 coins. By substituting these values into the equation, we solved for x and found that the cost of one loaf of bread is 2 coins.