Question

От деревни до города велосипед. ехал 4 часа со 12км час . ск - ко времени он потратит на обратный путь по той же дороге ,если скорость увеличиться на 4 км .час

Answer 1

1) 12*4= 48км
2) 12+4=16км/ч
3) 48:16=3ч
Ответ: 3 часа

Answer 2

Calculation of Time for the Return Trip

To calculate the time for the return trip, we need to consider the following information:

- The initial speed of the cyclist was 12 km/h. - The duration of the initial trip was 4 hours. - The speed for the return trip will be increased by 4 km/h.

To find the time for the return trip, we can use the formula:

Time = Distance / Speed

Let's calculate the distance for the initial trip:

Distance = Speed x Time

Distance = 12 km/h x 4 hours = 48 km

Now, let's calculate the time for the return trip:

Time = Distance / Speed

Time = 48 km / (12 km/h + 4 km/h) = 48 km / 16 km/h = 3 hours

Therefore, the cyclist will spend 3 hours on the return trip along the same road, assuming the speed is increased by 4 km/h.