Предмет: Математика, автор: Aliya123869

Сколько пятнадцатых долей сожержит дробь 2/3 ?
1)четыре
2)пять
3)шесть
4)десять
С объяснением пожалуйста
Please

Ответы

Автор ответа: phantome900

0

Соответственно будет 10 долей, вариант 4

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Автор ответа: phantome900

0

А умножаем на 5, чтобы в знаменателе получилось 15

Автор ответа: Двоишыник

0

Эту задачу можно понять как найти числитель дроби, при знаменателе 15.
В таком случае, нужно увеличить знаменатель 3 в 5 раз, тогда получится 15, при этом числитель тоже увеличится в 5 раз, получится 10 (вариант ответа #4).

Но более правильное понимание согласно условию:
15тых долей от чего то значит разделить что то на 15. А 2/3 это дробь, для удобства необходимо перевести 15 тоже в дробь. Получаем след:
2/3 ÷ 15/1 при делении дробь делитель переворачивается
2/3 • 1/15= 2/45
Такого ответа нет. Вывод: условие задачи написано двусмысленно и требует пояснения.

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