Question

Лена выбрала два примерно одинаковых лимона и положила их на весы. Весы показали, что масса двух лимонов равна 300 г. Что покажут весы, если она найдет еще один такой же лимон и взвесит вместе три лимона? ​

Answer 1

Ответ:

если лимона 2, то 300:2=150

значита масса 1 лимона 150

если лимона будет три то 150×3=450

итого масса 3 лимонов равна 450

Answer 2

Problem Analysis

Lena has chosen two approximately identical lemons and placed them on a scale. The scale shows that the combined weight of the two lemons is 300 grams. The question is: what will the scale show if she finds another lemon of the same size and weighs all three lemons together?

Solution

To find the weight of three lemons, we need to determine the weight of one lemon and then add it to the weight of the two lemons that Lena already weighed.

Let's assume that the weight of one lemon is x grams.

According to the given information, the combined weight of the two lemons is 300 grams. Therefore, we can set up the following equation:

2x = 300

To find the weight of one lemon, we can divide both sides of the equation by 2:

x = 150 grams

Now that we know the weight of one lemon, we can find the weight of three lemons by adding the weight of one lemon to the weight of the two lemons that Lena already weighed:

Weight of three lemons = Weight of one lemon + Weight of two lemons

Weight of three lemons = 150 grams + 300 grams

Weight of three lemons = 450 grams

Therefore, if Lena finds another lemon of the same size and weighs all three lemons together, the scale will show a weight of 450 grams.

Conclusion

If Lena finds another lemon of the same size and weighs all three lemons together, the scale will show a weight of 450 grams.