Question

Паша, Яша и Вася ели пиццу. За первый час Паша съел 50% пиццы, а Яша и Вася вместе за это же время съели кусок пиццы массой 100 граммов. За следующий час Паша съел 60% от оставшейся пиццы, а Яша и Вася съели кусок пиццы массой 175 граммов на двоих. В итоге осталось 75 граммов пиццы. Выразите 0.4 килограмма в миллиграммах. Ответ округлите до целых.​

Answer 1

Ответ:

625 грам съели пиццу паша яша и вася

Answer 2

Problem Analysis

We are given information about three people, Pasha, Yasha, and Vasya, who are eating pizza over a period of time. We need to calculate the weight of pizza left after two hours and express 0.4 kilograms in milligrams.

Solution

Let's break down the problem step by step:

1. In the first hour, Pasha ate 50% of the pizza, while Yasha and Vasya together ate a 100-gram slice of pizza. 2. In the second hour, Pasha ate 60% of the remaining pizza, while Yasha and Vasya together ate a 175-gram slice of pizza. 3. After two hours, there were 75 grams of pizza left.

To find the weight of the pizza after the first hour, we need to subtract the weight eaten by Pasha, Yasha, and Vasya from the initial weight of the pizza.

Let's calculate the weight of the pizza after the first hour:

Initial weight of the pizza = Weight eaten by Pasha + Weight eaten by Yasha and Vasya Initial weight of the pizza = 50% of the pizza + 100 grams Initial weight of the pizza = 0.5 * Initial weight of the pizza + 100 grams

Now, let's calculate the weight of the pizza after the second hour:

Weight of the pizza after the second hour = Weight after the first hour - Weight eaten by Pasha - Weight eaten by Yasha and Vasya Weight of the pizza after the second hour = 0.4 * Initial weight of the pizza - 60% of the remaining pizza - 175 grams Weight of the pizza after the second hour = 0.4 * Initial weight of the pizza - 0.6 * (0.4 * Initial weight of the pizza) - 175 grams

Finally, we know that there were 75 grams of pizza left after two hours. We can set