Question

В одном рулоне 7 м клеёнки, в другом 13 м такой же клеёнки. за второй рулон заплатили на 138 р. больше, чем за первый. Сколько денег заплатили за каждый рулон клеёнки? помогите пожалуйста умоляю решите по действиям

Answer 1

13-7=6 М на столько метров клеенки больше во втором рулоне
138÷6=23 руб. стоит 1 м клеенки
23×7=161 руб. заплатили за 1-ый рулон
23×13=299 руб. заплатили за 2ой рулон

Answer 2

13-7=6 (м) это мы узнали на сколько во втором рулоне больше клеёнки.
138:6=23 (р) это мы узнали сколько стоит один метр клеёнки
23*7=161(р) стоит 7 метров клеёнки
23*13=299( р)стоит13 метров клеёнки

Answer 3

Problem Analysis

We are given two rolls of tarpaulin, one with a length of 7 meters and the other with a length of 13 meters. The cost of the second roll is 138 rubles more than the cost of the first roll. We need to find the cost of each roll of tarpaulin.

Solution

Let's assume the cost of the first roll of tarpaulin is x rubles per meter. Therefore, the cost of the second roll of tarpaulin would be x + 138 rubles per meter.

To find the total cost of each roll, we need to multiply the cost per meter by the length of the roll.

The total cost of the first roll would be 7x rubles, and the total cost of the second roll would be 13(x + 138) rubles.

Since we know that the total cost of the second roll is 138 rubles more than the total cost of the first roll, we can set up the following equation:

13(x + 138) = 7x + 138

Now, let's solve this equation to find the value of x.

Equation Solving

Expanding the equation, we get:

13x + 1794 = 7x + 138

Simplifying the equation, we get:

6x = 1656

Dividing both sides of the equation by 6, we get:

x = 276

Answer

Therefore, the cost of the first roll of tarpaulin is 276 rubles per meter, and the cost of the second roll of tarpaulin is 414 rubles per meter.

Please let me know if you need any further assistance!