Question

Помогите Задача)В плацкартном вагоне пассажирских мест на 18 больше,чем в купейном.Всего в этих двух вагонах 90 пассажирских мест.Сколько пассажирских мест в плацкартном вагоне? В купейном вагоне?

Answer 1

1) 90+18=108
2) 108:2=54(пас)- в плацкартных
3) 54-18=36(пас)- в купейном

Answer 2

Problem Analysis

We are given that the number of passenger seats in a platzkart (open-plan) carriage is 18 more than the number of seats in a kupe (compartment) carriage. The total number of passenger seats in both carriages is 90. We need to find the number of passenger seats in the platzkart carriage and the kupe carriage.

Solution

Let's assume that the number of passenger seats in the kupe carriage is x. According to the problem, the number of passenger seats in the platzkart carriage is 18 more than x.

We can set up the following equation based on the given information: x + (x + 18) = 90

Simplifying the equation: 2x + 18 = 90 2x = 90 - 18 2x = 72 x = 72 / 2 x = 36

Therefore, the number of passenger seats in the kupe carriage is 36.

To find the number of passenger seats in the platzkart carriage, we can substitute the value of x into the equation: x + 18 = 36 + 18 = 54

Therefore, the number of passenger seats in the platzkart carriage is 54.

Answer

The number of passenger seats in the platzkart carriage is 54, and the number of passenger seats in the kupe carriage is 36.