Question

-одна бригада может собрать урожай за 8 дней, а другая за 6 дней. За какое время, работая вместе, бригады собирут 7/8 урожая?

Answer 1

$\frac{1}{8} + \frac{1}{6} = \frac{7}{24}$часть урожая собрали бригады за один день
$\frac{7}{8} : \frac{7}{24} = \frac{7}{8} * \frac{24}{7} =3$дня-время за которое бригады соберут 7/8 урожая

Answer 2

Calculation of Harvest Time for Two Brigades

To determine the time it will take for two brigades to harvest 7/8 of the crop, we need to consider the individual harvesting rates of each brigade.

According to the information provided, one brigade can harvest the crop in 8 days, while the other brigade can do it in 6 days.

To find the combined time it will take for both brigades to harvest 7/8 of the crop, we can use the following formula:

Combined Time = (Time for Brigade 1 x Time for Brigade 2) / (Time for Brigade 1 + Time for Brigade 2)

Let's calculate the combined time using this formula:

Time for Brigade 1 = 8 days Time for Brigade 2 = 6 days

Combined Time = (8 x 6) / (8 + 6)

Combined Time = 48 / 14

Combined Time ≈ 3.43 days

Therefore, it will take approximately 3.43 days for the two brigades to harvest 7/8 of the crop when working together.

Please note that the above calculation assumes that the two brigades work at a constant rate and there are no other factors affecting the harvesting process.