Question

мотоциклист проехал расстояние а км туда за 7 часов , а обратно - за 6 часов . на сколько километров в час он увеличил скорость на обратном пути?

Answer 1

Из первой вычитаем вторую скорость,т.е. Из 7 вычитаем 6
7-6=1км/ч

Answer 2

7-6=1(км\ч) 

Ответ: на 1 км\ч мотоциклист увеличил скорость на обратном пути.

Answer 3

Calculation of Speed Increase

To calculate the speed increase on the return trip, we need to determine the distance traveled in each direction and the time taken for each leg of the journey.

Let's assume that the distance traveled in one direction is a kilometers and the time taken is 7 hours. On the return trip, the distance traveled is also a kilometers, but the time taken is 6 hours.

To find the speed, we can use the formula:

Speed = Distance / Time

Let's calculate the speed for each leg of the journey:

For the forward trip: Speed = a km / 7 hours

For the return trip: Speed = a km / 6 hours

To find the increase in speed on the return trip, we can subtract the speed of the forward trip from the speed of the return trip:

Increase in Speed = Speed on Return Trip - Speed on Forward Trip

Let's substitute the values and calculate the increase in speed:

Increase in Speed = (a km / 6 hours) - (a km / 7 hours)

Simplifying the equation:

Increase in Speed = (7a - 6a) km / (6 * 7) hours

Increase in Speed = a km / 42 hours

Therefore, the motorcyclist increased their speed by a/42 kilometers per hour on the return trip.

Please note that the exact value of the distance traveled in one direction (a) is not provided in the question, so we cannot determine the specific increase in speed.