Question

Для школы купили 5 мотков электрического провода по 56 м в каждом . Израсходовали две седьмых части всего провода.Сколько метров провода осталось?

Answer 1

1) 5 * 56 = 280 м всего купили
2) 280 * 2/7 = 80 м израсходовали
3) 280 - 80 = 200 м осталось

Answer 2

Calculation of Remaining Wire Length

To calculate the remaining length of wire, we need to determine the total length of wire purchased and then subtract the length that was used.

Given: - 5 rolls of wire, each containing 56 meters of wire.

Total length of wire purchased: - 5 rolls * 56 meters/roll = 280 meters.

Amount of wire used: - Two-sevenths (2/7) of the total length of wire was used.

Calculation: - 2/7 * 280 meters = 80 meters.

Therefore, the remaining length of wire is 80 meters.