How far will a car travel in 15 min at 20m/s?

Answer: 18000 m

Explanation:

Speed is distance covered per unit time. Time is in minutes so we will convert it first to seconds.

15 mins x 60 s / 1 min. = 900 s

To find distance:

d = v x t = 20 m/s x 900s = 18000 m

Cancel out seconds and the remaining unit is in meters which is the unit for distance.