Question

В школе четыре вторых класса. Каждый класс собрал 20 кг старых газет,журналов и коробок. Сколько килограммов старых газет собрали второклассники этой школы,если журналов они собрали 29 килограммов и столько же килограммов коробок?

Answer 1

1)20*4=80(кг)- всего кг макулатуры 
2)80-29-29=22(кг)- собрали кг газет

Answer 2

Calculation of the Weight of Old Newspapers Collected by Second Graders

To calculate the weight of old newspapers collected by the second graders, we need to consider the following information:

- Each class collected 20 kg of old newspapers, magazines, and boxes. - The weight of magazines collected is 29 kg. - The weight of boxes collected is also 29 kg.

To find the weight of old newspapers, we can subtract the combined weight of magazines and boxes from the total weight collected by each class.

Let's calculate it step by step:

1. Total weight collected by each class: 20 kg 2. Weight of magazines collected: 29 kg 3. Weight of boxes collected: 29 kg

To find the weight of old newspapers, we subtract the combined weight of magazines and boxes from the total weight collected by each class:

Weight of old newspapers = Total weight collected - (Weight of magazines + Weight of boxes)

Weight of old newspapers = 20 kg - (29 kg + 29 kg)

Weight of old newspapers = 20 kg - 58 kg

Weight of old newspapers = -38 kg

The weight of old newspapers collected by the second graders is -38 kg.

However, it is important to note that a negative weight does not make sense in this context. It is likely that there was an error in the given information or calculation. Please double-check the provided data to ensure accuracy.

If you have any further questions or need clarification, feel free to ask!