Donna is riding her bicycle. she rides for 17.5 kilometers at a speed of 7 kilometers per hour. for how many hours does she ride?

2.5 hours

Step-by-step explanation:

To calculate the time taken to travel the distance, we will apply the distance speed time formula, which links the speed of an object, the distance traveled by it and the time taken for it to travel the distance as follows:

Time taken to travel the distance = Distance Traveled / Average Speed

We know the average speed to be 7 km/h

and the total distance traveled to be 17.5 km

Using these values and putting them in the equation we get,

Time taken = 17.5 / 7 = 2.5

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

its line 2 i just added the rest or else it wouldn't let me answer