Question

Теплоход проплыл вниз по реке с км за 4 часа, а на обратный путь он затратил 5 часов. На сколько километров в час меньше была его скорость на обратном пути?( с=100) помогите пожаалуйста

Answer 1

С=100, 100:4=25 - путь вниз по реке.
обратный путь: 100:5=20 - обратный путь.
Разница: 25-20=5км.
Ответ: На 5км в час

Answer 2

Calculating the Speed Difference

To calculate the speed difference, we can use the formula:

Speed = Distance / Time

Let's denote the speed of the boat on the downstream journey as S1 and the speed on the upstream journey as S2.

Given that the boat traveled a distance of 100 km downstream in 4 hours and the same distance upstream in 5 hours, we can calculate the speeds using the formula above.

Downstream Speed Calculation

S1 = Distance / Time = 100 km / 4 hours = 25 km/h

Upstream Speed Calculation

S2 = Distance / Time = 100 km / 5 hours = 20 km/h

Finding the Difference in Speed

To find the difference in speed, we subtract the upstream speed from the downstream speed:

Difference = S1 - S2 = 25 km/h - 20 km/h = 5 km/h

So, the boat's speed was 5 km/h less on the upstream journey compared to the downstream journey.