Question

В магазине за 3 дня продали 28 тонн картофеля. В первый день продали на 2 тонны меньше, чем во второй, а в третий 3/4 того, что продали в первый день и во второй вместе. Сколько тонн картофеля продали во второй день?

Answer 1

Ответ:

9 тонн картофеля продали во второй день

Пошаговое объяснение:

Пусть во второй день продали х тонн картофеля. Тогда:

(х-2) тонн картофеля продали в первый день

(х+х-2)*3/4 = 3/4(2х-2) = 3/4*2(х-1) = 1,5(х-1) тонн картофеля продали в третий день

за 3 дня продали 28 тонн картофеля

Составим уравнение:

х + х - 2 + 1,5(х-1) = 28

2х - 2 + 1,5х - 1,5 = 28

3,5х = 28 + 2 + 1,5

3,5х = 31,5

х = 31,5/3,5

х = 9 (тонн) картофеля продали во второй день

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9-2 = 7 тонн продали во второй день

3/4(9+7) = 3/4*16 = 12 тонн продали в третий день

9+7+12 = 28 тонн продали за 3 дня

Answer 2

Calculation of Potato Sales

To calculate the amount of potatoes sold on the second day, let's break down the information given:

- Total potatoes sold in 3 days: 28 tons - Potatoes sold on the first day: 2 tons less than the second day - Potatoes sold on the third day: 3/4 of what was sold on the first day and second day combined

Let's solve this step by step:

1. Let's assume the amount of potatoes sold on the second day is x tons. 2. The amount of potatoes sold on the first day is then x + 2 tons. 3. The amount of potatoes sold on the third day is 3/4 * (x + (x + 2)) tons.

Now, we can set up an equation to solve for x:

x + (x + 2) + 3/4 * (x + (x + 2)) = 28

Let's simplify and solve for x:

2x + 2 + 3/4 * (2x + 2) = 28

2x + 2 + 3/2 * x + 3/2 * 2 = 28

2x + 2 + 3x + 3 = 28

5x + 5 = 28

5x = 23

x = 23/5

x = 4.6

Therefore, approximately 4.6 tons of potatoes were sold on the second day.

Please note that this calculation assumes that the amount of potatoes sold on each day is in tons and that there are no other factors affecting the sales.