Question

первая бригада может выполнить задание за 30 дней, а вторая за 50 дней. Успеют ли они при совместной работе выполнить задание за 19 дней? РЕШИТЕ СРОЧНО НАДО СТАВЛЮ ЛУЧШЕЕ РЕШЕНИЕ !!!!

Answer 1

х - детали/день 1 бригада

у - детали/день 2 бригада

 

30х=1,   50у=1    , где 1 это все задание,

тогда

 

19(Х+У)=19(1/30+1/50)=19*(3+5)/150=19*8/150=152/150, что больше 1 , т.е. увсе успеють сдэлат

Answer 2

Task Completion Time for Two Brigades

To determine if the first and second brigades can complete the task in 19 days when working together, we need to calculate their combined efficiency.

Let's assume that the first brigade can complete the task in 30 days, and the second brigade can complete it in 50 days.

The formula to calculate the combined efficiency is:

Combined Efficiency = 1 / (1/First Brigade Efficiency + 1/Second Brigade Efficiency)

Using this formula, we can calculate the combined efficiency:

Combined Efficiency = 1 / (1/30 + 1/50)

Calculating this, we find that the combined efficiency is approximately 18.75 days.

Since the combined efficiency is less than 19 days, it is possible for the first and second brigades to complete the task in 19 days when working together.

Please note that the above calculation assumes that the efficiency of each brigade remains constant throughout the task and that there are no other factors affecting their performance.