Question

Три бригады Строителей должны построить 2 одинаковых дома на строительство 1 дома 1 бригаде потребуется 9 недель второй бригаде в одну целую одну 3 раза больше времени А 3 бригаде в 2 раза больше времени чем первый За сколько недель три бригады построить два дома работая совместно?

Answer 1

первая бригада один дом строит за 9 недель

1 1/3*9=4/3*9/1=36/3=12 недель нужно на строительство 1 дома второй бригаде

9*2=18 недель нужно на строительство одного дома третьей бригаде

1/9+1/12+1/18=4/36+3/36+2/36=9/36=1/4 дома построят три бригады за 1 неделю

2:1/4=2/1*4/1=8 недель нужно трем бригадам для строительства двух домов

 

Answer 2

Calculation of Construction Time for Each Brigade

To determine the total time required for three brigades to build two identical houses, we need to calculate the construction time for each brigade and then add them together.

According to the information provided: - The first brigade requires 9 weeks to build one house. - The second brigade requires 3 times as much time as the first brigade, which means it requires 3 x 9 = 27 weeks to build one house. - The third brigade requires 2 times as much time as the first brigade, which means it requires 2 x 9 = 18 weeks to build one house.

Total Construction Time for Three Brigades

To find the total construction time for three brigades working together, we add up the construction times for each brigade:

- First brigade: 9 weeks - Second brigade: 27 weeks - Third brigade: 18 weeks

Adding these times together, we get:

9 weeks + 27 weeks + 18 weeks = 54 weeks

Therefore, it will take the three brigades working together a total of 54 weeks to build two identical houses.