Question

В столовой было 800 кг. картофеля.В первый день израсходовали 1/4 часть всего картофеля, во второй день -на 120 кг. больше,чем в первый, а в третий день- остальной картофель.Сколько килограммов картофеля израсходовали в третий день? Задача на 4 действия

Answer 1

800:4=200 кг в первый день
200+120=320 кг второй день
200+32=520 кг за два дня
800-520=280 кг третий день

Answer 2

Problem Analysis

We are given that there were 800 kg of potatoes in the cafeteria. On the first day, 1/4 of the total potatoes were used. On the second day, 120 kg more potatoes were used than on the first day. And on the third day, the remaining potatoes were used. We need to find out how many kilograms of potatoes were used on the third day.

Solution

To solve this problem, we can break it down into four steps:

Step 1: Calculate the amount of potatoes used on the first day. The first day's usage is given as 1/4 of the total potatoes. To find this, we can multiply the total potatoes by 1/4. 800 kg * 1/4 = 200 kg

Step 2: Calculate the amount of potatoes used on the second day. The second day's usage is given as 120 kg more than the first day's usage. To find this, we can add 120 kg to the amount used on the first day. 200 kg + 120 kg = 320 kg

Step 3: Calculate the amount of potatoes remaining after the first two days. To find the remaining potatoes, we can subtract the total amount used in the first two days from the initial total. 800 kg - (200 kg + 320 kg) = 280 kg

Step 4: Calculate the amount of potatoes used on the third day. The third day's usage is equal to the remaining potatoes. Therefore, the amount of potatoes used on the third day is 280 kg.

Answer

The amount of potatoes used on the third day is 280 kg.

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