Question

Билет на паром для переправы через реку стоит 70руб. На детский билет предоставляется скидка 30%. Сколько рублей нужно заплатить за проезд 10 детей и 5 взрослых пассажиров?

Answer 1

1) 70 : 100 = 0,7 - 1% 
2) 30*0,7=21 скидка
3)70-21=49руб дет билет
4)49*10+70*5=490+350=840 руб на всех

Answer 2

Calculation of the Total Cost for Ferry Tickets

To calculate the total cost for ferry tickets, we need to consider the number of adult and child passengers, as well as the discount provided for child tickets.

Given the information provided, we have: - Cost of an adult ticket: 70 rubles - Discount for child tickets: 30%

Let's calculate the total cost for 10 children and 5 adults.

Calculation:

1. Calculate the cost of child tickets: - Cost of a child ticket = 70 rubles * (1 - 30%) = 49 rubles.

2. Calculate the total cost for child passengers: - Total cost for child passengers = Cost of a child ticket * Number of child passengers = 49 rubles * 10 = 490 rubles.

3. Calculate the total cost for adult passengers: - Total cost for adult passengers = Cost of an adult ticket * Number of adult passengers = 70 rubles * 5 = 350 rubles.

4. Calculate the overall total cost: - Overall total cost = Total cost for child passengers + Total cost for adult passengers = 490 rubles + 350 rubles = 840 rubles.

Therefore, the total cost for the ferry tickets for 10 children and 5 adults would be 840 rubles.