Question

Андрей заплатил за покупку m рублей. На хлеб он потратил 5/14 всей суммы, а на молоко-0,8 суммы, потраченнной на хлеб. Сколько денег Андрей потратил на молоко? Составьте выражение отвечающее на вопрос задачи упростите его и найти значение при m-210

Answer 1

Ответ:
2/7m рублей;
60 рублей.
Решение:
1) 5/14•m рублей потрачено на хлеб;
0,8•5/14•m = (8•5)/(10•14) • m = (4•1)/(2•7) • m = 2/7 • m рублей потрачено на молоко.
2) Если m = 210 рублей, то
2/7 • 210 = (2•210)/7 = 2•30 = 60 (руб) - потрачено на молоко.

Answer 2

To solve this problem, let's break it down step by step.

1. Andrei paid m rubles for his purchase. 2. He spent 5/14 of the total amount on bread. 3. He spent 0.8 times the amount spent on bread on milk.

To find out how much money Andrei spent on milk, we need to calculate the amount spent on bread first.

Let's represent the amount spent on bread as x.

According to the problem, Andrei spent 5/14 of the total amount on bread. So we can write the equation:

x = (5/14) * m

Next, we need to calculate the amount spent on milk, which is 0.8 times the amount spent on bread. We can represent the amount spent on milk as y.

So, y = 0.8 * x

Now, let's substitute the value of x from the first equation into the second equation:

y = 0.8 * ((5/14) * m)

To simplify this expression, we can multiply the fractions:

y = (0.8 * 5 * m) / 14

Now, let's simplify further:

y = (4 * m) / 14

Simplifying the expression, we get:

y = (2 * m) / 7

To find the value of y when m = 210, we substitute m = 210 into the equation:

y = (2 * 210) / 7 y = 420 / 7 y = 60

Therefore, Andrei spent 60 rubles on milk.

Answer:

Andrei spent 60 rubles on milk.

Note: The above solution is based on the information provided in the problem statement.