Question

Бабушка выпекает 8 пончиков за 1 мин и кладет их на тарелку. За это же время Боря и Петя сьедают по 2 пончика каждый. a) Сколько пончиков останется на тарелке через 3 мин после начала выпечкиБ) скольк минут прошло с начала выпечки если на тарелке осталось 20 пончиков?

Answer 1

А) (8-4)*3=12
Б)прошло 5 минут

Answer 2

Question A: Сколько пончиков останется на тарелке через 3 мин после начала выпечки?

According to the information provided, the grandmother bakes 8 donuts in 1 minute and puts them on a plate. Meanwhile, Borya and Petya each eat 2 donuts in the same amount of time.

To calculate how many donuts will be left on the plate after 3 minutes, we need to determine how many donuts are eaten in 3 minutes. Since Borya and Petya each eat 2 donuts in 1 minute, they will eat a total of 2 * 3 = 6 donuts in 3 minutes.

Therefore, if the grandmother bakes 8 donuts and 6 donuts are eaten, the number of donuts left on the plate after 3 minutes will be 8 - 6 = 2 donuts.

Question B: Сколько минут прошло с начала выпечки, если на тарелке осталось 20 пончиков?

If there are 20 donuts left on the plate, we can calculate how many minutes have passed since the beginning of the baking process.

Since the grandmother bakes 8 donuts in 1 minute, we can calculate the number of minutes it took to bake the remaining 20 donuts by dividing 20 by 8: 20 / 8 = 2.5 minutes.

Therefore, if there are 20 donuts left on the plate, it means that 2.5 minutes have passed since the beginning of the baking process.

Please note that the calculations assume a constant rate of baking and eating donuts throughout the given time period.