Question

За 3/4 ч велосипедист проехал 9 км. Найдите скорость велосипедиста (в км/ч) Какое расстояние он проедет за 3ч если будет двигаться с той же скоростью ?

Answer 1

9:3/4=12 (км/ч) скорость велосипедиста
12*3=36 (км) проедет за 3 часа

Answer 2

Calculation of the Cyclist's Speed

To find the speed of the cyclist, we can use the formula:

Speed = Distance / Time

Given that the cyclist traveled 9 km in 3/4 of an hour, we can substitute these values into the formula:

Speed = 9 km / (3/4) hour

To simplify the calculation, we can convert 3/4 hour to minutes. Since there are 60 minutes in an hour, 3/4 of an hour is equal to 45 minutes.

Speed = 9 km / 45 minutes

Now, we can convert the speed to kilometers per hour by multiplying it by 60 (to convert minutes to hours):

Speed = (9 km / 45 minutes) * 60 minutes/hour

Simplifying the expression:

Speed = 9 km / (45/60) hour

Speed = 9 km / (3/4) hour

Speed = 9 km / 0.75 hour

Speed = 12 km/h

Therefore, the speed of the cyclist is 12 km/h.