Question

Стоимость проездного билета на электричку на месяц составляет 720 рублей, а стоимость билета на одну поездку — 20 рублей. Сергей купил проездной и сделал за месяц 42 поездки. На сколько рублей больше он бы потратил, если бы покупал билеты на каждую поездку?

Answer 1

42*20=840р 
840-720=120 рублей он бы переплатил

Answer 2

20×42=840 (рублей)
840-720=120 (рублей)
Ответ: Сергей потратил бы на 120 рублей больше

Answer 3

Calculation of the Cost Difference

To calculate the cost difference, we need to determine the total cost of 42 individual tickets and compare it to the cost of the monthly pass.

The cost of a single ticket is 20 rubles, and the cost of the monthly pass is 720 rubles.

To find the total cost of 42 individual tickets, we multiply the cost of a single ticket by the number of trips: 42 trips * 20 rubles per trip = 840 rubles.

Therefore, if Sergey had bought individual tickets for each trip, he would have spent 840 rubles.

To find the difference in cost, we subtract the cost of the monthly pass from the cost of individual tickets: 840 rubles - 720 rubles = 120 rubles.

Therefore, Sergey would have spent 120 rubles more if he had bought individual tickets for each trip instead of the monthly pass.