Question

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

Answer 1

1)5х56=280(м.) - всего провода.
2)280:7х2=80(м.) - израсходовали.
3)280-80=200(м.)
Ответ: 200 м. осталось.

Answer 2

Calculating Remaining Length of Wire

To calculate the remaining length of wire, we can start by finding the total length of wire purchased and then determining the amount that was used.

Given: - 5 rolls of wire, each containing 56 meters of wire - Two-sevenths of the total wire was used

Total Length of Wire Purchased: - 5 rolls * 56 meters/roll = 280 meters [[4 #299]]

Length of Wire Used: - Two-sevenths of 280 meters = 280 * 2 / 7 = 80 meters [[4 #299]]

Calculating Remaining Length

Remaining Length of Wire: - Total length of wire purchased - Length of wire used = 280 meters - 80 meters = 200 meters

Therefore, after using two-sevenths of the total wire, there are 200 meters of wire remaining.