Question

В обменном пункте 1 украинская гривна стоит 3 рубля 70 копеек. Отдыхающие обменяли рубли на гривны и купили 3 кг помидоров по цене 4 гривны за 1 кг. Во сколько рублей обошлась им эта покупка? Ответ округлите до целого числа.

Answer 1

1) 3 кг * 4 гривны = 12 гривен
2) 12 гривен * 3 рубля 70 копеек = 44,4 рубля = 44 рубля

Answer 2

Calculation of the Cost in Rubles

To calculate the cost of the purchase in rubles, we need to multiply the price per kilogram of tomatoes (4 grivnas) by the weight of the tomatoes purchased (3 kilograms).

The cost of the purchase in rubles can be calculated as follows:

Cost in Rubles = Price per Kilogram * Weight in Kilograms

Substituting the given values:

Cost in Rubles = 4 grivnas/kg * 3 kg

To find the cost in rubles, we need to know the exchange rate between the Ukrainian hryvnia and the Russian ruble. According to the information provided, 1 Ukrainian hryvnia is equal to 3 rubles and 70 kopecks.

To convert the cost from grivnas to rubles, we need to multiply the cost in grivnas by the exchange rate:

Cost in Rubles = Cost in Grivnas * Exchange Rate

Substituting the given values:

Cost in Rubles = (4 grivnas/kg * 3 kg) * (3 rubles + 70 kopecks)

To simplify the calculation, we can convert the kopecks to rubles by dividing by 100:

Cost in Rubles = (4 grivnas/kg * 3 kg) * (3 rubles + 70 kopecks/100)

Now we can calculate the cost in rubles:

Cost in Rubles = (4 * 3) * (3 + 0.70/100)

Calculating the expression:

Cost in Rubles = 12 * (3 + 0.007)

Cost in Rubles ≈ 12 * 3.007

Cost in Rubles ≈ 36.084

Rounding the cost to the nearest whole number:

Cost in Rubles ≈ 36 rubles

Therefore, the cost of the purchase in rubles is approximately 36 rubles.