Question

Выбери подходящее уравнение для задачи, если часть пирога, съеденного на третий день, выразить как x : Дома у Максима был пирог, массой в 2 кг, который он съел за 3 дня. В первый день Максим съел в 2 раза меньше пирога, чем во второй день, а во второй день ещё 40% от съеденного на третий день. Сколько килограмм пирога осталось после первых двух дней? Варианты ответа: 0,8x+0,4x + x = 2 0,2x+0,4x + x = 2 20+40 + x = 2

Answer 1

Ответ:

0,2х+0,4х+х=2

этот вариант подходит

Answer 2

Ответ:

кхм

0,2х+0,4х+х=2

Объяснение:

можно подумать логически Максим в первый день съел в 2 раза меньше чем во второй, а во второй день ещё 40% и на третий день доел

Answer 3

Let's solve this problem step by step:

1) We need to find out how much of the pie Max ate on the third day. Let's say x represents the amount of pie eaten on the third day.

2) On the first day, Max ate 2 times less than on the second day. This means that on the first day, Max ate x/2 of the pie.

3) On the second day, Max ate 40% more of the pie than on the third day. This means that on the second day, Max ate 1.4x of the pie.

4) We need to find out how much pie is left after the first two days. To do this, we subtract the amount eaten on the first and second days from the total pie mass. Total pie mass - (amount eaten on first day + amount eaten on second day) = remaining pie mass

Now, let's choose the appropriate equation:

x/2 represents the amount eaten on the first day. 1.4x represents the amount eaten on the second day.

Therefore, the equation for the remaining pie mass is: 2 - (x/2 + 1.4x) = remaining pie mass

Simplifying the equation, we have: 2 - (0.5x + 1.4x) = remaining pie mass 2 - 1.9x = remaining pie mass

So, the equation we will use is x = 2 - 1.9x.

This equation represents the remaining pie mass after the first two days.