Question

За 5 одинаковых конвертов заплатили 55 руб. а за один такой же конверт в одну открытку 20 руб выбери и отметь такой вопрос чтобы задача решалась с помощью выражения 20 - 55 / 5 А) Сколько стоит один конверт? Б) Во сколько рублей открытка дешевле конверта? В) Сколько стоит вся покупка? Г) Сколько стоит одна открытка?

Answer 1

Ответ: Г) т.к. Если мы 55 делим на 5 то мы узнаём сколько стоит 1 конверт, а если потом от 20 отнимаем 15 то мы узнаём сколько стоит 1 открытка

Answer 2

Окей щас жди ок жди щас будет

Answer 3

Let's analyze the given expression: 20 - 55 / 5

The expression represents the cost of one envelope when buying it together with one greeting card (20 rubles) and subtracting the cost of five identical envelopes purchased separately (55 rubles).

A) To find the cost of one envelope, we can calculate the expression: 20 - 55 / 5 = 20 - 11 = 9 rubles. So, one envelope costs 9 rubles.

B) To find how much cheaper the greeting card is compared to one envelope, we can subtract the cost of one envelope from the cost of the greeting card. The cost of the greeting card is 20 rubles, and the cost of one envelope is 9 rubles. So, the difference is: 20 - 9 = 11 rubles. The greeting card is 11 rubles cheaper than one envelope.

C) To find the total cost of the purchase (one envelope and one greeting card), we can simply add their individual costs: 9 (envelope) + 20 (greeting card) = 29 rubles. The total cost of the purchase is 29 rubles.

D) To find the cost of one greeting card, we already know that it's 20 rubles, as given in the expression.

So, the answers are: A) One envelope costs 9 rubles. B) The greeting card is 11 rubles cheaper than one envelope. C) The total cost of the purchase is 29 rubles. D) One greeting card costs 20 rubles.