Question

Мотоцыклист проехал расстояние от одного города до другова за 3 ч двигаясь со скорастью 54км/ч сколька времени потребуется мотоцыклисту на абратный но уже по другой дороге если она длиней первой на 22 км а его скорасть будет меньше прежней на 8км/ч ???????????????

Answer 1

54х3=162 км - расстояние

162+22=184 км - расстояние обратно

54-8=46 км/ч - скорость обратно

184:46=4 часа - время обратно.

Answer 2

Calculating the Return Journey Time for the Motorcyclist

To calculate the time required for the motorcyclist to return on a longer road at a reduced speed, we can use the formula: \[ \text{Time} = \frac{\text{Distance}}{\text{Speed}} \]

Given: - Initial speed: 54 km/h - Initial time taken: 3 hours - Longer road length: 22 km more than the initial road - Reduced speed: 8 km/h less than the initial speed

Using the formula, we can calculate the time required for the return journey.

The initial distance traveled can be calculated using the initial speed and time taken: \[ \text{Distance} = \text{Speed} \times \text{Time} \] \[ \text{Distance} = 54 \, \text{km/h} \times 3 \, \text{h} = 162 \, \text{km} \]

The new speed for the return journey is \( 54 \, \text{km/h} - 8 \, \text{km/h} = 46 \, \text{km/h} \).

The new distance for the return journey is \( 162 \, \text{km} + 22 \, \text{km} = 184 \, \text{km} \).

Now, we can calculate the time required for the return journey: \[ \text{Time} = \frac{\text{Distance}}{\text{Speed}} \] \[ \text{Time} = \frac{184 \, \text{km}}{46 \, \text{km/h}} = 4 \, \text{hours} \]

The motorcyclist will require 4 hours for the return journey on the longer road at the reduced speed.