Question

Решить задачу по математике 4 класс. вычислить стоимость каждого телефонного разговора, тариф (цена) и продолжительность которого указаны в таблице .тариф 3 руб/мин, продолжительность 300сек .стоимость? 4 руб/мин. продолжительность 240 сек. стоимость? 2руб.коп./мин продолжительность 600сек. стоимость?

Answer 1

300:60=5 минут * 3 руб =15 рублей                                                                      240:60=4 минут * 4 руб =16 рублей                                                                     600:60=10 минут *2 руб =20 рублей

Answer 2

3*(300/60)=15(руб)
4*(240/60)=16(руб) 
2*(600/60)=20(руб)

Answer 3

Calculating the Cost of Phone Calls

To calculate the cost of each phone call, we can use the given tariff (price) and duration for each call. Let's calculate the cost for each call based on the provided information.

1. First Call: - Tariff: 3 rubles per minute - Duration: 300 seconds

To calculate the cost for the first call, we need to convert the duration from seconds to minutes: - 300 seconds = 300 / 60 = 5 minutes

Now, we can calculate the cost: - Cost = Tariff * Duration - Cost = 3 * 5 - Cost = 15 rubles

2. Second Call: - Tariff: 4 rubles per minute - Duration: 240 seconds

Again, we need to convert the duration from seconds to minutes: - 240 seconds = 240 / 60 = 4 minutes

Now, we can calculate the cost: - Cost = Tariff * Duration - Cost = 4 * 4 - Cost = 16 rubles

3. Third Call: - Tariff: 2 rubles and some kopecks per minute - Duration: 600 seconds

First, let's convert the duration from seconds to minutes: - 600 seconds = 600 / 60 = 10 minutes

The tariff is given in rubles and kopecks, so we'll need to convert the kopecks to rubles for simplicity. Assuming 1 ruble = 100 kopecks, we can calculate the cost: - Cost = Tariff * Duration - Cost = 2.00 * 10 - Cost = 20.00 rubles

So, the cost of the third call is 20.00 rubles.

Therefore, the cost of each phone call is: - First call: 15 rubles - Second call: 16 rubles - Third call: 20.00 rubles