Question

для школы купили 5 молотков электрического провода по 56 м в каждом израсходовали две седьмых части всего провода сколько метров провода осталось

Answer 1

Всего для школы было куплено 5 * 56 = 280 м провода.

Израсходовали 2 / 7 * 280 = 80 метров.

Осталось 280 - 80 = 200 м. 

Answer 2

Calculation of Remaining Wire Length

To calculate the remaining wire length, we need to determine the total length of wire used and subtract it from the initial length of wire purchased.

Given: - 5 hammers were purchased for the school. - Each hammer used 2/7 of the total wire length. - The total length of wire purchased was 56 meters.

Let's calculate the total length of wire used by multiplying the length of wire purchased by the fraction used by each hammer:

Total length