Question

Пять маляров могли бы покрасить забор за 27 дней (-я). За сколько дней тот же забор покрасят 15 маляров (-а). Ответ: за.......дней (день).

Answer 1

1) 15:5=3 - во сколько раз быстрее 15 маляров покрасят забор.
2) 27:3=9 - за девять дней покрасят забор 15 маляров.
Ответ: 15 маляров.

Answer 2

Problem Analysis

We are given that five painters can paint a fence in 27 days. We need to determine how many days it would take for 15 painters to paint the same fence.

Solution

Let's assume that the amount of work required to paint the fence is the same regardless of the number of painters. This means that the rate at which the work is done is directly proportional to the number of painters.

If five painters can complete the job in 27 days, we can use the formula:

Number of painters x Number of days = Constant

Let's call the constant "K". So, for five painters, we have:

5 x 27 = K

To find the number of days it would take for 15 painters, we can rearrange the formula:

Number of days = K / Number of painters

Substituting the value of K from the previous equation:

Number of days = (5 x 27) / 15

Simplifying the equation:

Number of days = 135 / 15

Number of days = 9

Therefore, it would take 15 painters 9 days to paint the same fence.

Answer

The same fence would be painted in 9 days by 15 painters.