Question

Один экскаватор за 7 часов выкапывает 133 м канавы,а другой экскаватор за 9 часов выкапывает 342 м канавы.Какой экскаватор выгоднее приобрести,если цена на них одинаковая?

Answer 1

1)133:7=19м-первый экскаватор за 1 час
2)342:9=38м-второй экскаватор за 1 час 
Ответ:выгоднее купить второй экскаватор так как за 1 час он выкапывает больше канавы чем первый

Answer 2

Comparing the Efficiency of Two Excavators

To determine which excavator is more cost-effective to purchase, we need to compare their digging rates.

According to the information provided, one excavator can dig 133 meters of a trench in 7 hours, while the other excavator can dig 342 meters of a trench in 9 hours.

To calculate the digging rate of each excavator, we can divide the length of the trench by the number of hours it takes to dig it.

Let's calculate the digging rates for both excavators:

Excavator 1: Digging rate = 133 meters / 7 hours = 19 meters per hour.

Excavator 2: Digging rate = 342 meters / 9 hours = 38 meters per hour.

Based on these calculations, Excavator 2 has a higher digging rate than Excavator 1. Therefore, if the price of both excavators is the same, it would be more advantageous to purchase Excavator 2.

Please note that the information provided does not specify any other factors that might affect the decision, such as maintenance costs, fuel consumption, or additional features of the excavators.