Question

На трех полках 80 книг,на третьей полке 18 книг,на второй в два раза больше чем в первой.сколько книг на полках?

Answer 1

18*2=36 на 2 полке
36+18=54
80-54=26 на третьей полке
Ответ:36 на 2 п.; 26 на 1 полке

Answer 2

Calculating the Number of Books on the Shelves

To calculate the number of books on the shelves, we can use the information provided.

Let's denote: - the number of books on the first shelf as x, - the number of books on the second shelf as 2x (twice as many as the first shelf), and - the number of books on the third shelf as 18.

We are given that the total number of books on the three shelves is 80 + 18 = 98.

Using this information, we can set up the following equation: x + 2x + 18 = 98

Solving for x: 3x + 18 = 98 3x = 98 - 18 3x = 80 x = 80 / 3 x = 26.67

As the number of books should be a whole number, we can conclude that there is an error in the given information or the calculation.

Conclusion

Based on the given information, the calculation for the number of books on the shelves does not result in a whole number. It's possible that there may be a mistake in the provided data or the calculation.