Question

Мастер может отштамповать 480 деталей за 4 ч, а ученику на выполнение этой работы потребуется времени в 3 раза больше. За сколько часов могут отштамповать 480 деталей мастер и ученик при совместной работе?

Answer 1

1)3*4=12часов        это делает ученик 480 деталий

2)480:4=120 д это делает мастер за час

3)480:12=40 деталей делает ученик 

4)120+40=160 это они вмести делают за 1 час 

5)480:160=3 часа это они сделаю 480 деталей вместе 

ЭТО ТОЧНО ПРАВЕЛЬНЫЙ ОТВЕТ МЫ СЕГОДНЯ РЕШАЛИ ТАКУЮЖЕ И Я ПОЛУЧИЛ ЗА НЕЕ 5!

Answer 2

Calculating the Time Taken for Master and Apprentice to Stamp 480 Parts

To calculate the time taken for the master and the apprentice to stamp 480 parts when working together, we can use the information provided in the question and apply the concept of combined work.

Given: - The master can stamp 480 parts in 4 hours. - The apprentice takes 3 times longer than the master to complete the same task.

Let's calculate the time taken for the master and the apprentice to stamp 480 parts when working together.

Solution:

1. Master's Work Rate: - The master can stamp 480 parts in 4 hours. - Therefore, the master's work rate is 480 parts / 4 hours = 120 parts per hour.

2. Apprentice's Work Rate: - The apprentice takes 3 times longer than the master to complete the same task. - This means the apprentice's work rate is 1/3 of the master's work rate. - Therefore, the apprentice's work rate is 120 parts per hour / 3 = 40 parts per hour.

3. Combined Work Rate: - When working together, the combined work rate of the master and the apprentice is the sum of their individual work rates. - Combined work rate = Master's work rate + Apprentice's work rate - Combined work rate = 120 parts per hour + 40 parts per hour = 160 parts per hour.

4. Time Taken for Master and Apprentice to Stamp 480 Parts: - Using the combined work rate, we can calculate the time taken for the master and the apprentice to stamp 480 parts. - Time = Total work / Combined work rate - Time = 480 parts / 160 parts per hour = 3 hours.

Conclusion:

When working together, the master and the apprentice can stamp 480 parts in 3 hours.