Question

За первый месяц отремонтировали 65% дороги, за второй - 60% оставшегося, а за третий - остальные 28 км. Сколько километров дороги отремонтировали за три месяца?

Answer 1

1) 100-65=35(%) - Осталось после 1 месяца
2) 35*60/100=21 (%) - Сделали  во 2 месяц
3) 35-21=14 (%) - Сделали в 3 месяц
4) 28/14*100=200 (км)- За 3 месяца
Ответ: 200 км

Answer 2

Calculating the total kilometers of road repaired over three months

Let's break this down step-by-step: * For the first month, they repaired 65% of the total road. Let's assume the total road was 100 km. Then they repaired 65 km in the first month. 65% of the total road was repaired in the first month. * In the second month, they repaired 60% of what was remaining. The remaining was 100 - 65 = 35 km. 60% of 35 is 0.6 * 35 = 21 km. So they repaired 21 km in the second month. 60% of the remaining road was repaired in the second month. * In the third month, they repaired the remaining 28 km. The remaining 28 km was repaired in the third month. * To calculate the total: - First month: 65 km - Second month: 21 km - Third month: 28 km - Total = 65 + 21 + 28 = 114 km

Therefore, the total kilometers of road repaired over the three months was 114 km.