Question 284687
I think this is the ans:

In 5 min , 30 feet is covered ,next 2 min 10 feet backwards.

So in 7 min only 20 feet . OK.

20 feet -----> 7 min

1 feet ------> 7/20 min

1010 feet ---> ( 7*1010 ) / 20 min
              = 353.5 min (nearly 6 hrs,Shooo.  )


Happy.......