Question

Объясните, как решать? :) Из задачника по ЕГЭ, готовлюсь... Шоколадка стоит 31 рубль. В воскресенье в супермаркете действует специальное предложение: заплатив за две шоколадки, покупатель получает три (одну в подарок). Сколько шоколадок можно получить на 170 рублей в воскресенье?

Answer 1

170:31=5 шоколадок+ 2 по акции,итого 7 шоколадок и 15 руб сдачи
170-(31*4)= 46руб сдачи (4 шок.+2 в подарок=6шок.и еще 1 на 46 руб.,)итого 7 шоколадок

Answer 2

Problem Analysis

To solve this problem, we need to determine how many chocolate bars can be obtained for 170 rubles during the special offer at the supermarket. The offer states that if a customer pays for two chocolate bars, they will receive three, with one of them being free. The price of each chocolate bar is 31 rubles.

Solution

To find out how many chocolate bars can be obtained for 170 rubles, we can divide the total amount by the price of two chocolate bars. Since the offer gives three chocolate bars for the price of two, we can multiply the result by three to find the total number of chocolate bars.

Let's calculate it step by step:

1. Determine the price of two chocolate bars: 31 rubles x 2 = 62 rubles. 2. Divide the total amount of 170 rubles by the price of two chocolate bars: 170 rubles ÷ 62 rubles = 2.7419 (rounded to four decimal places). 3. Multiply the result by three to find the total number of chocolate bars: 2.7419 x 3 = 8.2257 (rounded to four decimal places).

Therefore, with 170 rubles, you can obtain approximately 8.226 chocolate bars during the special offer on Sunday.

Please note that the result is rounded to four decimal places for simplicity.