Question

Строители первой бригады могут построить здание за 15 месяцов строители второй бригады за 2\3 этого времени за сколько месяцов могут построить здание две бригады работая сов местно

Answer 1

Смотри 2/3 от 15- это 10 месяцев.от 15-10 (так как они будут работать вместе) получается 5 месяцев.

Answer 2

Problem Analysis

We are given that the first team of builders can construct a building in 15 months, and the second team of builders can complete the same building in 2/3 of the time taken by the first team. We need to determine how long it would take for both teams to construct the building if they work together.

Solution

Let's assume that the first team can complete the building in x months. According to the given information, the second team can complete the building in 2/3 of x months.

We can set up the following equation to represent the time taken by both teams working together:

1/x + 1/(2/3x) = 1/t

Where: - x represents the time taken by the first team to complete the building - 2/3x represents the time taken by the second team to complete the building - t represents the time taken by both teams working together

To solve this equation, we can find a common denominator and simplify:

3/3x + 3/(2x) = 1/t (6 + 9)/(6x) = 1/t 15/(6x) = 1/t

Cross-multiplying, we get:

15t = 6x t = 6x/15 t = 2x/5

Therefore, both teams working together can complete the building in 2x/5 months.

Answer

Both teams working together can complete the building in 2x/5 months.