Question 476543
speed of one = 2 ft/s
speed of second=3ft/s

..
a. in x seconds they wind up together 2x+3x = 5x feet

b. 3 minutes = 180 second

in 3 minutes they will wind 5*180 = 900 ft

c. 2100 feet 

together they wind 5 ft/s

so they will take 2100/5 = 420 seconds = 7 minutes

m.ananth@hotmail.ca