Question

Книга дороже тетради на 80 рублей.За книгу заплатили на 80 рублей больше,чем за тетрадь.Сколько нужно заплатить за 3 таких тетради и 2 таких книги вместе?

Answer 1

640 рублей потому что 160 умножить на три равно 480 и осталось прибавить 180

Answer 2

80+80=160
160+3+2=165

Answer 3

Solution:

Given that the book is 80 rubles more expensive than the notebook, and the total cost for the book is 120 rubles, we can calculate the cost of the notebook and the difference in cost between the notebook and the book.

1. Calculating the Cost of the Notebook: - Let's denote the cost of the notebook as x. - The cost of the book is 80 rubles more than the notebook, so the cost of the book is x + 80. - The total cost for the book is 120 rubles, so we have the equation: x + 80 = 120. - Solving for x: - x = 120 - 80 - x = 40

2. Calculating the Total Cost for 3 Notebooks and 2 Books: - The total cost for 3 notebooks is 3 * 40 = 120 rubles. - The total cost for 2 books is 2 * 120 = 240 rubles. - Therefore, the total cost for 3 notebooks and 2 books together is 120 + 240 = 360 rubles.

So, the total cost for 3 notebooks and 2 books together is 360 rubles.

Answer:

The total cost for 3 notebooks and 2 books together is 360 rubles.