Question

В столовую завезли 81 л молока.На завтрак потратили 1/3 часть молока,а остаток розлили в баки по 18 л в каждом.Сколько нужно было баков.

Answer 1

81:3=27 потратили
81-27=54 осталось
54:18=3 бака

Answer 2

81:3=27

81-27=54

54:18=3

Answer 3

Problem Analysis

We are given that 81 liters of milk were delivered to the cafeteria. For breakfast, 1/3 of the milk was used, and the remaining milk was poured into containers, with each container holding 18 liters. We need to determine how many containers were needed.

Solution

To find the number of containers needed, we first need to calculate the amount of milk remaining after breakfast. We can do this by subtracting 1/3 of the total milk from the initial amount of milk.

Let's calculate the amount of milk remaining after breakfast:

Amount of milk remaining after breakfast = Total milk - (1/3 * Total milk)

Now, let's substitute the given values:

Amount of milk remaining after breakfast = 81 liters - (1/3 * 81 liters)

Simplifying the expression:

Amount of milk remaining after breakfast = 81 liters - (27 liters)

Amount of milk remaining after breakfast = 54 liters

Now, we need to determine how many containers are needed to hold 54 liters of milk. Since each container can hold 18 liters, we can divide the amount of milk remaining after breakfast by 18 to find the number of containers needed.

Let's calculate the number of containers needed:

Number of containers needed = Amount of milk remaining after breakfast / Capacity of each container

Substituting the values:

Number of containers needed = 54 liters / 18 liters

Simplifying the expression:

Number of containers needed = 3 containers

Therefore, 3 containers are needed to hold the remaining milk after breakfast.

Answer

The cafeteria needed 3 containers to hold the remaining milk after breakfast.