Question

Три друга студента решили вскладчину купить компьютер.У одного было 3860 рублей.Это на 760 рублей меньше,чем у второго, и на 110 рублей больше, чем у треть его. Хватит ли друзьям денег на покупку компьютера, если компьютер стоит 12000 рублей? МНЕ НАДО КРАТКУЮ ЗАПИСЬ ПОЖАЛУЙСТА. ДАЮ 10 БАЛЛОВ

Answer 1

1)3860+760=4620-у второго
2)3860-110=3750-у третьего
3)3860+4620+3750=12230руб.
Ответ:им хватит на покупку компа(еще останется)

Answer 2

3860+760=4620 у второго
3860-110=3750 у третьего
3862+4620+3750= 12232
ответ мальчикам хватит на компьютер

Answer 3

Problem Analysis

Three friends are pooling their money to buy a computer. One friend has 3860 rubles, which is 760 rubles less than the second friend and 110 rubles more than the third friend. The computer costs 12000 rubles. We need to determine if the friends have enough money to buy the computer.

Solution

Let's solve this problem step by step:

1. Let's assume the amount of money the second friend has is x rubles. 2. According to the problem, the first friend has 760 rubles less than the second friend, so the first friend has x - 760 rubles. 3. The first friend also has 110 rubles more than the third friend, so the third friend has (x - 760) - 110 rubles. 4. The total amount of money the three friends have is the sum of their individual amounts: 3860 + x + (x - 760) + ((x - 760) - 110) rubles. 5. We need to check if the total amount of money is greater than or equal to the cost of the computer, which is 12000 rubles.

Now, let's solve the equation:

3860 + x + (x - 760) + ((x - 760) - 110) >= 12000

Simplifying the equation:

3860 + x + x - 760 + x - 760 - 110 >= 12000

Combining like terms:

3x - 1570 >= 12000

Adding 1570 to both sides:

3x >= 13570

Dividing both sides by 3:

x >= 4523.33

Since x represents the amount of money the second friend has, it must be greater than or equal to 4523.33 rubles for the friends to have enough money to buy the computer.

Conclusion

To determine if the friends have enough money to buy the computer, we need to know the amount of money the second friend has. If the second friend has 4523.33 rubles or more, then the friends have enough money to buy the computer.