Question

Инопланетянин попал на Землю и решил съесть всё мороженое, которое нашёл в магазине. В первый день он съел 2/7 всего мороженого. Во второй 7/15 от оставшегося. В третий день он проглотил 5/23 от всего мороженого, которое изначально было в магазине. Сколько килограммов мороженого съел инопланетянин в четвертый день, если всего за 4 дня он съел 483 кг этого лакомства?

Answer 1

Ответ:

79 кг.

Пошаговое объяснение:

За 4 дня он съел 483 кг.

В 1 день он съел 2/7 всего мороженого:

483*2/7 = 69*2 = 138 кг.

Осталось 483 - 138 = 345 кг.

Во 2 день он съел 7/15 оставшегося:

345*7/15 = 23*7 = 161 кг.

Осталось 345 - 161 = 184 кг.

В 3 день он проглотил 5/23 от того, что было в начале.

483*5/23 = 21*5 = 105 кг.

Осталось 184 - 105 = 79 кг.

Их он и съел на 4 день.

Answer 2

To solve this problem, we need to calculate the amount of ice cream the alien ate each day and then find the amount he ate on the fourth day.

Let's break down the problem step by step:

1. On the first day, the alien ate 2/7 of the total ice cream. 2. On the second day, he ate 7/15 of the remaining ice cream. 3. On the third day, he ate 5/23 of the total ice cream that was originally in the store.

To find the amount of ice cream the alien ate on the fourth day, we can subtract the sum of the amounts he ate on the first three days from the total amount he ate over the four days.

Let's calculate it:

1. The total amount of ice cream the alien ate over the four days is given as 483 kg. 2. Let's calculate the amount he ate on the first three days: - First day: 2/7 of the total ice cream. - Second day: 7/15 of the remaining ice cream. - Third day: 5/23 of the total ice cream.

To calculate the amount he ate on the fourth day, we subtract the sum of the amounts he ate on the first three days from the total amount:

Total amount - (Amount on first day + Amount on second day + Amount on third day) = Amount on fourth day

Let's calculate it:

1. Amount on first day: 2/7 * Total amount 2. Amount on second day: 7/15 * (Total amount - Amount on first day) 3. Amount on third day: 5/23 * Total amount

Now we can calculate the amount on the fourth day:

Amount on fourth day = Total amount - (Amount on first day + Amount on second day + Amount on third day)

Let's substitute the values and calculate it:

Amount on fourth day = 483 kg - (2/7 * Total amount + 7/15 * (Total amount - Amount on first day) + 5/23 * Total amount)

Unfortunately, the exact values of the total amount and the amount on the first day are not provided in the question. Without these values, we cannot calculate the amount of ice cream the alien ate on the fourth day.

Please provide the missing information, and I'll be happy to help you with the calculation.