Question

За 3 дня продали 130 кг апельсинов . во 2 день продали четыре девятых того что продали в 1 день а в 3 столько сколько за 1 день и за 2 день помогите

Answer 1

Продали в
1й день  х
2й день 4/9*х
3й день х+4/9х=13/9х

х+4/9х+13/9х=130
9/9х+4/9х+13/9х=130
26/9х=130
х=130:26/9=130*9/26=65*9/13=5-9=45кг продали в 1й день 
4/9*45=4/1*5=20кг- во 2й
45+20=65кг- в 3й

Answer 2

Problem Analysis

We are given that 130 kg of oranges were sold over a period of 3 days. On the second day, four-ninths of what was sold on the first day was sold, and on the third day, the same amount was sold as on the first day. We need to determine the amount of oranges sold on each day.

Solution

Let's break down the problem step by step:

1. Let's assume the amount of oranges sold on the first day is x kg. 2. On the second day, four-ninths of what was sold on the first day was sold. So, the amount of oranges sold on the second day is (4/9)x kg. 3. On the third day, the same amount was sold as on the first day. So, the amount of oranges sold on the third day is also x kg. 4. The total amount of oranges sold over the 3 days is 130 kg. Therefore, we can write the equation: x + (4/9)x + x = 130.

Now, let's solve the equation to find the value of x:

x + (4/9)x + x = 130
(9/9)x + (4/9)x + (9/9)x = 130
(22/9)x = 130
x = (9/22) * 130
x ≈ 53.18

So, approximately 53.18 kg of oranges were sold on the first day.

Now, let's calculate the amount of oranges sold on the second and third days:

Amount sold on the second day = (4/9) * 53.18 ≈ 23.51 kg
Amount sold on the third day = 53.18 kg

Therefore, approximately 53.18 kg of oranges were sold on the first and third days, and approximately 23.51 kg were sold on the second day.

Answer

Approximately 53.18 kg of oranges were sold on the first and third days, and approximately 23.51 kg were sold on the second day.