Question

У елдоса и мираса есть 36 марк.если елдос мирасу даст 40% своих марк тогда у елдос останется 2 раза меньше чем мираса. сколько было у елдоса и мираса сначала

Answer 1

1)40% = 40/100 = 4/10 = 0,4
Пусть у Елдоса было х марок,
Тогда у Мираса было 36 - х марок.
Если Елдос отдаст Мирасу 40% из своих марок х - 0,4х,
то у Мираса будет 36 - х + 0,4х марок. При этом у Елдоса окажется в два раза меньше марок.
Составим и решим уравнение:
2(х - 0,4х)= 36 - х + 0,4х
2х - 0,8х = 36 - 0,6х
1,2х + 0,6х = 36
1,8х = 36
х = 36 : 1,8
х = 20 (марок) - было у Елдоса
2)36 - 20 = 16 (марок)- было у Мираса.
Ответ: 20 марок и 16 марок.

Answer 2

Problem Analysis

We are given that Eldos and Miras have a total of 36 marks. If Eldos gives 40% of his marks to Miras, then Eldos will have 2 times fewer marks than Miras. We need to find out how many marks Eldos and Miras had initially.

Solution

Let's assume that Eldos initially had x marks and Miras initially had y marks.

According to the given information, we have two equations:

1. Eldos and Miras have a total of 36 marks: - x + y = 36

2. If Eldos gives 40% of his marks to Miras, then Eldos will have 2 times fewer marks than Miras: - x - 0.4x = 2(y + 0.4x)

Now, let's solve these equations to find the initial number of marks for Eldos and Miras.

Solving the Equations

1. Eldos and Miras have a total of 36 marks: - x + y = 36

2. Eldos will have 2 times fewer marks than Miras: - x - 0.4x = 2(y + 0.4x)

Simplifying equation 2: - 0.6x = 2y + 0.8x - 0.2x = 2y - x = 10y

Substituting x = 10y into equation 1: - 10y + y = 36 - 11y = 36 - y = 36 / 11 - y ≈ 3.27

Substituting y ≈ 3.27 into x = 10y: - x = 10 * 3.27 - x ≈ 32.7

Since the number of marks cannot be in decimal places, we can round x ≈ 32.7 to the nearest whole number.

Answer

Therefore, initially, Eldos had approximately 33 marks and Miras had approximately 3 marks.

Please note that the given information is incomplete, and the exact values may vary depending on the specific context of the problem.