Question

У Коли и Сережи было вместе 60 монет. Коля отдал Сереже 5 монет,и у него стало в 2 раза больше монет, чем у Сережи.Сколько монет было у Коли и сколько у Сережи?

Answer 1

У КОли будет 45 коп.А у Сережи 15.Так как Коля дает Сереже 5 коп(к его 15-дцати) у него будет 20 а у Колі 40.

Answer 2

1) (х-5):2=65-х

х-5=2*(65-х)

х-5=130-2х

х+2х=130+5

3х=135

х=135:3

х=45 монет у Коли

2) 60-45=15 монет у Серёжи.

Answer 3

Solution:

Let's solve this problem step by step.

1. Let's assume the number of coins Kolya had initially is K and the number of coins Serezha had initially is S. 2. According to the given information, we have the following equation: - K + S = 60 (The total number of coins they had together) 3. After Kolya gave 5 coins to Serezha, Kolya had twice as many coins as Serezha: - (K - 5) = 2 * (S + 5)

Now, we can solve these equations to find the values of K and S.

First, let's solve the equation K + S = 60 for K: - K = 60 - S

Now, we can substitute the value of K in the second equation: - (60 - S - 5) = 2 * (S + 5)

Solving for S: - 55 - S = 2S + 10 - 55 - 10 = 2S + S - 45 = 3S - S = 15

Now that we have the value of S, we can find the value of K: - K = 60 - 15 - K = 45

So, Kolya initially had 45 coins and Serezha initially had 15 coins.

Answer:

Kolya initially had 45 coins and Serezha initially had 15 coins.