Question

С 1 по 20 июля 1 кг картофеля продавался на рынке по 18 руб., с 21 по 28 июля по 17 руб., с 29 по 31 июля по 16, 5 руб. определить среднюю цену реализации 1 кг картофеля в июле месяце и на сколько руб. она снизилась по сравнению с июнем, если в июне 1 кг картофеля стоил на 5% дороже

Answer 1

Решение:
Средняя цена реализации 1 кг картофеля в июле месяце:
31 / (20/18 + 8/17 + 3/16,5) = 31/ (1,11+0,47+0,06) = 18,90 руб.
Снижение цены 1 кг картофеля в июле по сравнению с июнем:
18,90 + (18,90*5%) = 19,85 руб.
19,85-18,90 = 0,95 руб.  

Answer 2

Calculation of Average Price of Potatoes in July

To calculate the average price of potatoes in July, we need to consider the different prices at which they were sold during the month.

From the information provided, the price of 1 kg of potatoes was as follows: - From 1 to 20 July: 18 rubles per kg - From 21 to 28 July: 17 rubles per kg - From 29 to 31 July: 16.5 rubles per kg To calculate the average price, we can use the formula:

Average Price = (Total Price for the Period) / (Total Quantity for the Period)

Let's calculate the average price for July:

1. Calculate the total price for each period: - From 1 to 20 July: 18 rubles per kg * 20 kg = 360 rubles - From 21 to 28 July: 17 rubles per kg * 8 kg = 136 rubles - From 29 to 31 July: 16.5 rubles per kg * 3 kg = 49.5 rubles

2. Calculate the total quantity for each period: - From 1 to 20 July: 20 kg - From 21 to 28 July: 8 kg - From 29 to 31 July: 3 kg

3. Calculate the overall total price and quantity for July: - Total Price for July = 360 rubles + 136 rubles + 49.5 rubles = 545.5 rubles - Total Quantity for July = 20 kg + 8 kg + 3 kg = 31 kg

4. Calculate the average price for July: - Average Price = Total Price for July / Total Quantity for July - Average Price = 545.5 rubles / 31 kg ≈ 17.6 rubles per kg

Therefore, the average price of 1 kg of potatoes in July was approximately 17.6 rubles.

Comparison with June's Price

To determine how much the price of potatoes decreased compared to June, we need to know the price of potatoes in June and the percentage increase.

From the information provided, in June, 1 kg of potatoes was 5% more expensive than in July.

Let's calculate the price of potatoes in June:

1. Calculate the price decrease percentage: - Price Increase Percentage = 5%

2. Calculate the price of potatoes in June: - Price in June = Price in July / (1 + Price Increase Percentage) - Price in June = 17.6 rubles / (1 + 0.05) ≈ 16.76 rubles per kg

Therefore, the price of 1 kg of potatoes in June was approximately 16.76 rubles.

To determine the decrease in price, we can subtract the price in July from the price in June:

- Price Decrease = Price in June - Price in July - Price Decrease = 16.76 rubles - 17.6 rubles ≈ -0.84 rubles

The price of 1 kg of potatoes decreased by approximately 0.84 rubles compared to June.

Please note that the calculations are based on the information provided and may not reflect the actual market conditions.