Question

Первый мастер изготавливает юрту за 20 дней,второй за 12,третий за 15.За сколько дней три мастера из готовят юрту при совместной работе?

Answer 1

Первый сделает за 60 дней - 3 юрты
второй за 60 дней - 5 юрт
третий за 60 дней - 4 юрты

за 60 дней вместе они сделают 12 юрт => 1 юрту сделают за 60/12=5 дней

Answer 2

Calculating the Time Taken by Three Masters to Build a Yurt

To calculate the time taken by three masters to build a yurt when working together, we can use the concept of the work done by each master in a unit of time.

- The first master takes 20 days to build a yurt. - The second master takes 12 days to build a yurt. - The third master takes 15 days to build a yurt.

To find the combined time taken by all three masters, we can use the formula:

Total work = 1 / (1/20 + 1/12 + 1/15)

Let's calculate the total time taken by all three masters to build a yurt.

The total work is given by the formula: Total work = 1 / (1/20 + 1/12 + 1/15)

Using this formula, the total work can be calculated as follows:

Total work = 1 / (0.05 + 0.0833 + 0.0667) Total work = 1 / 0.2 Total work = 5 days

Therefore, when working together, the three masters will take 5 days to build a yurt.