Question

Стоимость железнодорожного билета на один и тот же маршрут меняется в зависимости от даты поездки: среднегодовая цена билета увеличивается или уменьшается на несколько процентов. Стоимость плацкартного билета 31.08.2013 из Санкт-Петербурга в Москву составила 1374 рублей, при этом стоимость билетов в период с 13 июля по 2 сентября была выше среднегодовой на 20%.Какова была стоимость соответствующего билета 23 декабря, если в период с 21 декабря по 26 декабря стоимость билета выше среднегодовой на 10%?

Answer 1

1374р-это 120 %
Хр-это 100%
значит Х=1374*100/120=1145р
далее
1145р-это 100%
Х-это 110%
значит Х=1145*110/100=1259,5
ответ 1259.5 р 

Answer 2

Calculation of the Ticket Price

To calculate the cost of the ticket on December 23, we need to consider the given information about the ticket price on August 31 and the percentage increase in ticket prices during different periods.

The ticket price on August 31, 2013, from St. Petersburg to Moscow was 1374 rubles.

During the period from July 13 to September 2, the ticket price was higher than the average annual price by 20%.

During the period from December 21 to December 26, the ticket price was higher than the average annual price by 10%.

Calculation Steps

1. Calculate the average annual price: - Let's assume the average annual price is X rubles.

2. Calculate the ticket price during the period from July 13 to September 2: - The ticket price during this period was 20% higher than the average annual price. - So, the ticket price during this period was X + (0.2 * X) = 1.2X rubles.

3. Calculate the ticket price during the period from December 21 to December 26: - The ticket price during this period was 10% higher than the average annual price. - So, the ticket price during this period was X + (0.1 * X) = 1.1X rubles.

4. Calculate the ticket price on December 23: - We know that the ticket price on August 31 was 1374 rubles. - The ticket price on August 31 was higher than the average annual price by 20%. - So, we can set up the following equation: 1.2X = 1374. - Solving this equation, we find that X = 1374 / 1.2 = 1145 rubles (approximately).

- Now, we need to calculate the ticket price on December 23, which was higher than the average annual price by 10%. - So, the ticket price on December 23 was 1.1 * 1145 = 1259.5 rubles (approximately).

Answer

The cost of the corresponding ticket on December 23 was approximately 1259.5 rubles.

Please note that the calculations are based on the given information and assumptions made.