Предмет: Математика, автор: aylarakadyrova9

Токарь изготовил 24 детали за 2 2/5 часа (обыкновенная дробь). За сколько времени, работая с той же производительностью, он изготовит: 34 деталей, 15 деталей и 4 деталей?

НУЖНО СРОЧНО РЕШИТЬ ПОМОГИТЕ ПОЖАЛУЙСТА, ЗАРАНЕЕ СПАСИБО

Ответы

Автор ответа: f4536p

Ответ:

34 детали: 3 $\frac{2}{5}$ часа

15 деталей: 1,5 часа

4 детали: $\frac{2}{5}$ часа

Пошаговое объяснение:

производительность токаря равна: 24 дет : 2 $\frac{2}{5}$ час = $\frac{24}{2,4}$ =10 дет/час

34 детали: 3 $\frac{2}{5}$ часа

15 деталей: 1,5 часа

4 детали: $\frac{2}{5}$ часа

Автор ответа: artemlebedevar

Ответ:

3.4 часа, 1.5 часа, 0.4 часа

Пошаговое объяснение:

Представим 2 2/5 в виде неправильной дроби, получим 12/5.

Посчитаем за сколько он изготавливает 1 деталь. 12/5 /24=0.1 часа

Следовательно, 34 детали за 3.4 часа (0.1*34), 15 деталей за 1.5 часа (0.1*15), 4 детали за 0.4 часа (0.1*4)

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