Question

Путешествуя на катере по Волге, турист в первый день проплыл 72 км, во второй день - 7/8 того, что проплыл в первый день, а в третий -8/9 того, что проплыл во второй. На сколько км меньше проплыл турист в третий день, чем во второй?Обязательно КРАТКУЮ ХОРОШУЮ ЗАПИСЬ!!!!!!

Answer 1

1 день - 72км
2 день - 7/8 км от первого дня
3 день - 8/9 км от второго дня  
(сравнительной  скобкой объедини 2 и 3 день и напиши "на сколько меньше")

1) 72 * 7 / 8 = 63 (км)  проплыл во второй день
2) 63 * 8 / 9 = 56 (км) проплыл в третий день
3) 63 - 56 = 7(км)
Ответ: на 7 км меньше турист проплыл в третий день, чем во второй

Answer 2

Calculation of the Distance Traveled by the Tourist

To calculate the distance traveled by the tourist on the third day, we need to determine the distances traveled on the first and second days.

- On the first day, the tourist traveled 72 km. - On the second day, the tourist traveled 7/8 of the distance traveled on the first day.

To find the distance traveled on the second day, we can multiply the distance traveled on the first day by 7/8:

Distance on the second day = (7/8) * 72 km

Now, let's calculate the distance traveled on the third day.

- On the third day, the tourist traveled 8/9 of the distance traveled on the second day.

To find the distance traveled on the third day, we can multiply the distance traveled on the second day by 8/9:

Distance on the third day = (8/9) * (7/8) * 72 km

Calculation of the Difference in Distance

To find the difference in distance between the third and second days, we need to subtract the distance traveled on the third day from the distance traveled on the second day.

Difference in distance = Distance on the second day - Distance on the third day

Now, let's substitute the values we calculated earlier into the equation:

Difference in distance = [(7/8) * 72 km] - [(8/9) * (7/8) * 72 km]

Simplifying the equation:

Difference in distance = (7/8 - 8/9) * 72 km

To calculate the difference, we need to find a common denominator for 8 and 9, which is 72.

Difference in distance = [(7 * 9 - 8 * 8) / (8 * 9)] * 72 km

Difference in distance = (63 - 64) / 72 * 72 km

Difference in distance = -1 km

Therefore, the tourist traveled 1 km less on the third day compared to the second day.