Question

За три тіжкні відремонтувалі 56 км дороги. За другий тиждень відремонтувалі у 2 рази больше, чем за перший, а за третій-на 8 км более, чем за перший. Скільки кілометрів дороги відремонтувалі шкірного тижня?

Answer 1

1-я неделя - х км

2-я неделя - 2х км

3-я неделя - (х + 8) км

Всего 56 км

- - - - - - - - - - - - - - - - - -

Уравнение: х + 2х + х + 8 = 56

                     4х = 56 - 8

                     4х = 48

                     х = 48 : 4

                     х = 12 (км) - за первую неделю

                     12 · 2= 24 (км) - за вторую неделю

                     12 + 8 = 20 (км) - за третью неделю

Ответ: 12 км, 24 км и 20 км.

Answer 2

Calculation of Road Repairs for Each Week

To calculate the total kilometers of road repairs for each week, we can use the information provided in the question. Let's break it down:

- In the first week, 56 km of road were repaired. - In the second week, the number of road repairs was twice as much as the first week. - In the third week, the number of road repairs was 8 km more than the first week.

Let's calculate the number of kilometers of road repairs for each week:

- First week: 56 km - Second week: 2 times the first week = 2 * 56 km = 112 km - Third week: 8 km more than the first week = 56 km + 8 km = 64 km

Total Road Repairs for Three Weeks

To find the total kilometers of road repairs for the three weeks, we need to add up the kilometers repaired in each week:

Total road repairs = First week + Second week + Third week Total road repairs = 56 km + 112 km + 64 km

Let's calculate the total:

Total road repairs = 232 km

Therefore, a total of 232 kilometers of road were repaired in three weeks.