Answer:
Harry will take 21 seconds
Step-by-step explanation:
Speed = distance covered / time taken
Harry covers 12 miles in 6 minutes so,
the speed of Harry will be 12/6 = 2 miles per minute.
Therefore, if he covers 0.7 miles then time taken by him will be,
Time taken = distance covered / speed
= 0.7 / 2
= 0.35 minutes
= 0.35 x 60 seconds
= 21 seconds
I hope this helps :)