Question

Що швидше – проїхати весь шлях на велосипеді або половину шляху подолати на мотоциклі, який рухається вдвічі швидше велосипеда, а другу половину – пройти пішки, що вдвічі повільніше, ніж їхати на велосипеді?

Answer 1

Ответ:

проїхати весь шлях  на велосипеді швидше у 5 разів

Пошаговое объяснение:

Answer 2

Comparison of Traveling Modes

To compare the time it takes to travel the entire distance on a bicycle versus covering half the distance on a motorcycle, which moves at twice the speed of a bicycle, and then walking the remaining half at half the speed of cycling, we can calculate the time for each scenario.

Let's assume the following: - Distance to be covered: D - Speed of the bicycle: B - Speed of the motorcycle: 2B (twice the speed of the bicycle) - Walking speed: B/2 (half the speed of the bicycle)

Traveling the Entire Distance on a Bicycle

The time it takes to travel the entire distance on a bicycle can be calculated using the formula: \[ \text{Time} = \frac{\text{Distance}}{\text{Speed}} \]

So, the time taken to travel the entire distance on a bicycle is: \[ T_{\text{bicycle}} = \frac{D}{B} \]

Covering Half the Distance on a Motorcycle and Walking the Remaining Half

When covering half the distance on a motorcycle and the remaining half on foot, the time taken for each part can be calculated separately.

1. Time taken to cover half the distance on a motorcycle: \[ T_{\text{motorcycle}} = \frac{D}{2 \times 2B} = \frac{D}{4B} \]

2. Time taken to walk the remaining half of the distance: \[ T_{\text{walking}} = \frac{D}{2 \times (B/2)} = \frac{D}{B} \]

Adding the time taken on the motorcycle and the time taken for walking: \[ T_{\text{total}} = T_{\text{motorcycle}} + T_{\text{walking}} = \frac{D}{4B} + \frac{D}{B} \]

Conclusion

By comparing the time taken for each scenario, we can determine which method is faster for covering the entire distance.

Let's calculate the time for both scenarios and compare the results.