Question

Задача: В столовой за три месяца использовали 2679 кг овощей: за первый месяц использовали третью часть всех овощей, за второй месяц - в 2 раза меньше, чем за первый. Сколько килограммов овощей использовали за третий месяц?

Answer 1

1) 2679:3=893 (кг) - за первый месяц
2) 893:2=446,5 (кг) - за второй месяц
3) 2679-(893+446,5)=1339,5 (кг) - за третий месяц

Answer 2

Problem:

В столовой за три месяца использовали 2679 кг овощей: за первый месяц использовали третью часть всех овощей, за второй месяц - в 2 раза меньше, чем за первый. Сколько килограммов овощей использовали за третий месяц?

Solution:

To find out how many kilograms of vegetables were used in the third month, we need to calculate the amount of vegetables used in the first two months and subtract it from the total amount of vegetables used in three months.

Let's break down the problem step by step:

1. Calculate the amount of vegetables used in the first month: - The first month used one-third of all the vegetables. - Let's represent the total amount of vegetables used in three months as x. - The amount of vegetables used in the first month is x/3.

2. Calculate the amount of vegetables used in the second month: - The second month used half of the amount used in the first month. - The amount of vegetables used in the second month is (x/3)/2.

3. Calculate the total amount of vegetables used in the first two months: - The total amount of vegetables used in the first two months is the sum of the amounts used in the first and second months. - The total amount of vegetables used in the first two months is (x/3) + (x/3)/2.

4. Calculate the amount of vegetables used in the third month: - The amount of vegetables used in the third month is the difference between the total amount of vegetables used in three months and the total amount used in the first two months. - The amount of vegetables used in the third month is x - [(x/3) + (x/3)/2].

Let's calculate the amount of vegetables used in the third month:

1. Calculate the amount of vegetables used in the first month: - The total amount of vegetables used in three months is 2679 kg. - The amount of vegetables used in the first month is 2679/3 = 893 kg.

2. Calculate the amount of vegetables used in the second month: - The amount of vegetables used in the second month is (893/2) = 446.5 kg.

3. Calculate the total amount of vegetables used in the first two months: - The total amount of vegetables used in the first two months is 893 + 446.5 = 1339.5 kg.

4. Calculate the amount of vegetables used in the third month: - The amount of vegetables used in the third month is 2679 - 1339.5 = 1339.5 kg.

Therefore, 1339.5 kg of vegetables were used in the third month.