Предмет: Математика, автор: lukasikmatvej7

Завдання 28. Бабуся зліпила 75 пельменів за 15 хв, а онука- 60 пельменів за 10 хв.
1) Хто з них зліпив більше пельменів за 1 хв і на скільки пельменів більше?
А. Бабуся, на 1 пельмень.
Б. Онука, на 1 пельмень.
В. Бабуся, на 2 пельмені.
2) Скільки пельменів зліпить бабуся за 1 год?
А. 175 пельменів.
Б. 200 пельменів.
Г. Онука, на 2 пельмені.
В. 250 пельменів.
Г. 300 пельменів.
3) Скільки пельменів зліпить онука за 1,5 год?
А. 90 пельменів.
Б. 360 пельменів.
В. 540 пельменів.
Г. 600 пельменів.


lukasikmatvej7: будь ласко с поясненям

Ответы

Автор ответа: iramazurk
0

Пошаговое объяснение:

75 : 15 = 5 (пельменей) - лепила за 1 минуту бабушка

60 : 10 = 6 (пельменей) - лепила за 1 минуту внучка

1) 6 - 5 = 1 (пельмень) - больше лепила внучка за 1 минуту (Б)

2) 1 час = 60 минут

5 * 60 = 300 (пельменей) - слепит за 1 час бабушка (Г)

3) 1,5 часа = 60 * 1,5 = 90 минут

6 * 90 = 540 (пельменей) - слепит за 1,5 часа внучка (В)

Автор ответа: iramazurk
2

Пошаговое объяснение:

75 : 15 = 5 (пельменей) - лепила за 1 минуту бабушка

60 : 10 = 6 (пельменей) - лепила за 1 минуту внучка

1) 6 - 5 = 1 (пельмень) - больше лепила внучка за 1 минуту (Б)

2) 1 час = 60 минут

5 * 60 = 300 (пельменей) - слепит за 1 час бабушка (Г)

3) 1,5 часа = 60 * 1,5 = 90 минут

6 * 90 = 540 (пельменей) - слепит за 1,5 часа внучка (В)

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