K is kayaking down river from a dock at 9 mph. Paco is jet skiing up the river from dock, at 30 mph. How long before they are 13 miles apart? Round your answer to the nearest minute.

Question

Kelly and Paco like water sports. Kelly is kayaking down the river from a dock in Jasper County at 9 miles per hour. Paco is jet skiing up the river from the same dock, going 30 miles per hour. How long will it be before the two of them are 13 miles apart on the river?

If necessary, round your answer to the nearest minute.

 hours and  minutes

 

Submit:

Answer 1

Their relative speed is 39mph. s=vt where s=distance=13m, v=speed=39mph, t=time=13/39hr=1/3hr=20 mins.