Question

В трёх вагонах электрички едут 90 пассажиров. В первом вагоне в два раза больше пассажиров, чем во втором, а в третьем — на 10 пассажиров меньше, чем в первом. Сколько пассажиров в каждом вагоне? пожалуйста

Answer 1

Ответ:

В объяснении

Объяснение:

В первом вагоне 40, во втором 20, в третьем 30, потому что первый вагон = (90 - 10) /2 = 40, второй = 40/2, третий 40 - 10 = 30

Answer 2

Calculating the Number of Passengers in Each Train Car

To solve this problem, we can use algebra to represent the number of passengers in each train car based on the given information.

Let's denote: - the number of passengers in the second car as x, - the number of passengers in the first car as 2x (twice the number in the second car), - the number of passengers in the third car as 2x - 10 (10 fewer than the number in the first car).

Now, we can set up an equation based on the total number of passengers:

x + 2x + (2x - 10) = 90

Solving for x will give us the number of passengers in the second car, and then we can find the number of passengers in the other cars.

Solving for the Number of Passengers in Each Car

Let's solve the equation: x + 2x + (2x - 10) = 90

Combining like terms: 5x - 10 = 90

Adding 10 to both sides: 5x = 100

Dividing by 5: x = 20

So, the number of passengers in the second car (x) is 20.

Now we can find the number of passengers in each car: - First car: 2x = 2*20 = 40 - Second car: x = 20 - Third car: 2x - 10 = 2*20 - 10 = 40 - 10 = 30

Conclusion

Therefore, there are 40 passengers in the first car, 20 passengers in the second car, and 30 passengers in the third car.