Answer :
I'm assuming it's either Km or Miles per hour. But that's just needed for the final answer unit. Since 15 mins is quarter of an hour and speed is distance/time this gives:
Distance = Speed * time = 25 * 0.25 = 6.25 (put the unit here as miles or Km as the question stated)
Hope that helped.
Distance = Speed * time = 25 * 0.25 = 6.25 (put the unit here as miles or Km as the question stated)
Hope that helped.