Question

a motorcycle covers a distance of 8.5 km in 15 minutes. Calculate the distance covered by the motorcycle in per second​

Answer 1

answer is .009km/sec

Answer 2

First, convert 15 mins to seconds:

1min=60sec

15min=60•15

15min=900sec

Now, let’s create a ratio. We want to find the unit rate (most simplified rate) of distance covered by the motorcycle.

Recall that d=s•t, where d=distance, s=speed, and t=time.

So, we know the distance is d=8.5 and the time is t=900sec, but we need the speed (“s”)

8.5km=(900sec)•s

Divide both sides by 900:

8.5km/900sec=s

.009km/sec=s

So, your answer is .009km/sec