Question

Каждые 8 минут Веня зажигает 1 свечу.Каждая свеча горит ровно 25 минут,а затем гаснет.Сколько свечек будет гореть через час после того,как Веня зажег 1 свечку?

Answer 1

 60/8=7,5, -за 1 час 7 свечей 

на 25-ой минуте потухнет первая

на 33-й вторая

на 41-ой третья

на 49-ой четвёртая

на 57-ой пятая

значит, будут гореть 2 свечи

Answer 2

за час он успеет зажечь 60/8=7,5, т. е. 7 свечей

на 25-ой минуте потухнет первая

на 33-й вторая

на 41-ой третья

на 49-ой четвёртая

на 57-ой пятая

значит, будут гореть 2 свечи

Answer 3

Calculating the Number of Candles Burning After One Hour

To calculate the number of candles that will be burning after one hour, we can follow these steps:

1. Candles Lit by Venya: - Venya lights 1 candle every 8 minutes.

2. Candle Burning Time: - Each candle burns for exactly 25 minutes.

3. Calculating the Number of Candles Burning After One Hour: - First, we determine how many candles Venya will light in one hour. - Then, we calculate how many of those candles will still be burning after one hour.

Let's proceed with the calculations.

Calculation

1. Candles Lit in One Hour: - In one hour, there are 60 minutes. - Venya lights 1 candle every 8 minutes, so in one hour (60 minutes), he will light 60 / 8 = 7.5 candles. Since he can't light half a candle, we consider this as 7 candles lit in one hour.

2. Candles Still Burning After One Hour: - Since each candle burns for 25 minutes, the candles lit in the first 25 minutes will still be burning after one hour. - Therefore, all 7 candles lit within the first 25 minutes will still be burning after one hour.

Conclusion

After one hour, 7 candles will still be burning from the initial lighting of 1 candle by Venya.

This calculation assumes that Venya continues to light candles at the same rate without interruption.