Question

Тетрадь стоит 15 рублей.Сколько заплатит покупатель за 80 тетрадей,если при покупке 50 тетрадей магазин делает скидку 15% от стоимости всей покупки?

Answer 1

1) 15 * 80 = 1200 рублей - стоимость всех тетрадей
2) 0.15 * 1200 = 180 рублей - скидка
3) 1200 - 190 = 1020 рублей ( ОТВЕТ ) 

Answer 2

Calculation of the Total Cost

To calculate the total cost of purchasing 80 notebooks, we need to consider the price per notebook and the discount offered by the store.

Given that each notebook costs 15 rubles, the initial cost of purchasing 80 notebooks without any discount would be 80 * 15 = 1200 rubles.

However, the store offers a 15% discount on the total cost of the purchase when buying 50 notebooks.

Calculation with Discount

To calculate the discounted cost, we need to determine the cost of the first 50 notebooks and the cost of the remaining 30 notebooks.

The cost of the first 50 notebooks can be calculated as 50 * 15 = 750 rubles.

The cost of the remaining 30 notebooks can be calculated as 30 * 15 = 450 rubles.

Therefore, the total cost of purchasing 80 notebooks with the discount is 750 + 450 = 1200 rubles.

Answer

The customer will pay 1200 rubles for 80 notebooks, taking into account the 15% discount offered by the store when purchasing 50 notebooks.