Question

За конфеты заплатили на 5,4 р. больше, чем за печенье, а за всё вместе заплатили 42 р . Сколько заплатили за конфеты? заранее спасибо)))

Answer 1

Можно решить уравнением.

Возьмем стоимость печенья за х.

Тогда стоимость конфет стоит в 5.4 раза больше - х+5.4

Всего они стоят 42р.

Следовательно,х+(х+5.4)=42

х+х+5.4=42

2х=42-5.4

2х=36.6

х=36.6:2

х=18.3

Теперь сложим - х+5.4

18.3+5.4=23.7

Ответ:за конфеты заплатили 23.7

Answer 2

Problem Analysis

We are given that the amount paid for candies is 5.4 rubles more than the amount paid for cookies, and the total amount paid for both candies and cookies is 42 rubles. We need to determine the amount paid for candies.

Solution

Let's assume the amount paid for cookies is x rubles. According to the given information, the amount paid for candies is 5.4 rubles more than the amount paid for cookies. Therefore, the amount paid for candies is x + 5.4 rubles.

The total amount paid for both candies and cookies is 42 rubles. So we can set up the following equation:

x + (x + 5.4) = 42

Simplifying the equation:

2x + 5.4 = 42

Subtracting 5.4 from both sides:

2x = 42 - 5.4

2x = 36.6

Dividing both sides by 2:

x = 36.6 / 2

x = 18.3

Therefore, the amount paid for cookies is 18.3 rubles.

To find the amount paid for candies, we can substitute the value of x into the expression x + 5.4:

18.3 + 5.4 = 23.7

Therefore, the amount paid for candies is 23.7 rubles.

Answer

The amount paid for candies is 23.7 rubles.