Em uma corrida, a velocidade dos ciclistas é igual a 16 km/h. Supondo que o treino dure 50 min e que o comprimento da pista seja 1400 mts, quantas voltas foram dadas pelos ciclistas?

9.5 laps (9.5 voltas)

Explanation:

A rough translation of this is:

"In a race, the speed of the bikers is 16km/h. Assuming that the training lasts 50min, and the length of the track is 1400mts, how many laps did the bikers?"

First, remember the relation:

Distance = Speed*time.

In this case:

Speed = 16km/h

time = 50min

We have two different units for time, hours and minutes.

We know that 1 hour = 60 minutes.

Then we can write the speed as:

Speed = 16km/(60min) = 0.267km/min

And for the distance we alsohave two units, the lenght of the track is in meters, and the speed is in Km, knowing that:

1km = 1000m

We can write the distance of the track as:

1400m = (1400/1000)km = 1.4km

Now, all the data that we have is:

Speed = 0.267 km/min

Time =  50 min

Length of the track: 1.4km.

and using the relation: Distance = Speed*time.

we can find the total distance traveled by the bikers:

Distance = 0.267km/min*50min = 13.33km

Now, if each lap is 1.4km long, then in 13.33km the bikers did:

13.33km/1.4km = 9.5 laps.

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