Question

Купили 7 кг лука и 5 кг картофеля, заплатив за всю покупку 290 рублей. Сколько стоит 1 кг лука, если 1 кг картофеля стоит 16 рублей?

Answer 1

Ответ:

30

Пошаговое объяснение:

16*5=80(рублей)-сума картошки

290-80=210(рублей)- на картошку

210÷7=30(рублей/кг)

Answer 2

Calculation of the Cost of 1 kg of Onion

To calculate the cost of 1 kg of onion, we need to determine the cost of the entire purchase and the cost of 1 kg of potatoes.

Given: - Weight of onion = 7 kg - Weight of potatoes = 5 kg - Cost of the entire purchase = 290 rubles - Cost of 1 kg of potatoes = 16 rubles

To find the cost of 1 kg of onion, we can follow these steps:

1. Calculate the total cost of potatoes: - Weight of potatoes = 5 kg - Cost of 1 kg of potatoes = 16 rubles - Total cost of potatoes = Weight of potatoes * Cost of 1 kg of potatoes

2. Calculate the total cost of the entire purchase: - Total cost of the entire purchase = 290 rubles

3. Calculate the total cost of onion: - Total cost of onion = Total cost of the entire purchase - Total cost of potatoes

4. Calculate the cost of 1 kg of onion: - Weight of onion = 7 kg - Cost of 1 kg of onion = Total cost of onion / Weight of onion

Let's calculate the cost of 1 kg of onion using the given information:

1. Calculate the total cost of potatoes: - Weight of potatoes = 5 kg - Cost of 1 kg of potatoes = 16 rubles - Total cost of potatoes = 5 kg * 16 rubles = 80 rubles

2. Calculate the total cost of the entire purchase: - Total cost of the entire purchase = 290 rubles

3. Calculate the total cost of onion: - Total cost of onion = Total cost of the entire purchase - Total cost of potatoes - Total cost of onion = 290 rubles - 80 rubles = 210 rubles

4. Calculate the cost of 1 kg of onion: - Weight of onion = 7 kg - Cost of 1 kg of onion = Total cost of onion / Weight of onion - Cost of 1 kg of onion = 210 rubles / 7 kg = 30 rubles per kg

Therefore, the cost of 1 kg of onion is 30 rubles.