Question

Учащийся купил проездной билет и совершил за месяц 30 поездок. Сколько рублей составила экономия, если стоимость одной поездки=20 рублей, а стоимость проездного 505 рублей А) 85 Б) 95 В) 105 Г) 115

Answer 1

1) 20 * 30 = 600 (руб.) - если бы он платил.
2) 600 - 505 = 95 (руб.) - экономия
Ответ: Б) 95

Answer 2

Calculation of Savings on Monthly Pass

To calculate the savings made by the student, we need to determine the total cost of individual trips without the monthly pass and compare it to the cost of the monthly pass.

Given: - Cost of one trip: 20 rubles - Cost of the monthly pass: 505 rubles - Number of trips made in a month: 30

To find the total cost of individual trips without the monthly pass, we multiply the cost of one trip by the number of trips made in a month:

Total cost of individual trips = Cost of one trip * Number of trips made in a month

Total cost of individual trips = 20 rubles * 30 trips = 600 rubles

Therefore, the total cost of individual trips without the monthly pass is 600 rubles.

To calculate the savings, we subtract the cost of the monthly pass from the total cost of individual trips:

Savings = Total cost of individual trips - Cost of the monthly pass

Savings = 600 rubles - 505 rubles = 95 rubles

The student saved 95 rubles by purchasing the monthly pass.