Question

.три экскаватора произвели прокладку оросительного канала.первый экскаватор выполнил 30% всей дневной нормы,второй минус 3/7остатка,а третий-360м кубических дневного задания.сколько кубических метров грунта вырыли все три экскаватора за смену?

Answer 1

1 экскаватор сделал 30%=3/10 работы. Осталось 7/10.
2 сделал 3/7 остатка, т.е. 3/7*7/10=3/10, как и 1 экскаватор.
Осталось 7/10-3/10=4/10, и это равно 360 куб.м.
Значит, весь объём равен 360*10/4=900 куб.м.

Answer 2

Calculating Total Cubic Meters Excavated by Three Excavators

To calculate the total cubic meters of soil excavated by all three excavators, we'll need to consider the work completed by each excavator.

1. Work Completed by the First Excavator: - The first excavator completed 30% of the daily norm.

2. Work Completed by the Second Excavator: - The second excavator completed minus 3/7 of the remaining work.

3. Work Completed by the Third Excavator: - The third excavator completed 360 cubic meters of the daily task.

To find the total amount of soil excavated by all three excavators, we'll calculate the sum of the work completed by each excavator.

Calculations:

1. Work completed by the first excavator: 30% of the daily norm 2. Work completed by the second excavator: minus 3/7 of the remaining work 3. Work completed by the third excavator: 360 cubic meters of the daily task

Let's calculate the total amount of soil excavated by all three excavators.