Question

лыжники за три дня прошли 80 км. за 1 день они прошли 25 % всего пути, а за 2 день 60% оставшегося пути. сколько км они прошли в 3 день?​

Answer 1

Ответ:

12 км.

Пошаговое объяснение:

80:100=0,8(км.) -1%

25+60=85(%) -прошли в процентах

85*0, 8=68(км.)- прошли в км.

80-68=12(км.)

Answer 2

Problem Analysis

We are given that a group of skiers covered a total distance of 80 km in three days. On the first day, they covered 25% of the total distance, and on the second day, they covered 60% of the remaining distance. We need to determine how many kilometers they covered on the third day.

Solution

Let's break down the problem step by step:

1. Calculate the distance covered on the first day: 25% of 80 km. 2. Calculate the remaining distance after the first day: 75% of 80 km. 3. Calculate the distance covered on the second day: 60% of the remaining distance. 4. Calculate the remaining distance after the second day: 40% of the remaining distance. 5. Calculate the distance covered on the third day: the remaining distance after the second day.

Let's calculate each step:

1. Distance covered on the first day: 25% of 80 km = 20 km. 2. Remaining distance after the first day: 75% of 80 km = 60 km. 3. Distance covered on the second day: 60% of 60 km = 36 km. 4. Remaining distance after the second day: 40% of 60 km = 24 km. 5. Distance covered on the third day: the remaining distance after the second day = 24 km.

Therefore, the skiers covered 24 km on the third day.

Answer

The skiers covered 24 km on the third day.