Question

За 7 дней экскаватор вырыл 231 м канавы. Сколько метров канавы будет вырыто за 12 дней?

Answer 1

231:7=33 м - роет за 1 день

33*12=396 м - выроет за 12 дней

Answer 2

To find out how many meters of the trench will be dug in 12 days, we can use the concept of proportionality.

Let x be the number of meters of the trench dug in 12 days.

We know that in 7 days, the excavator dug 231 meters of the trench. So, the proportion can be set up as follows:

7 days : 231 meters = 12 days : x meters

To find x, we can cross-multiply and solve for it:

7 days * x meters = 231 meters * 12 days

7x = 2772

Now, isolate x by dividing both sides by 7:

x = 2772 / 7

x = 396

So, the excavator will dig 396 meters of the trench in 12 days.