Problem on boats and streams - XP Math - Forums

 XP Math - Forums Problem on boats and streams

 07-03-2014 #1 burgess   Join Date: Jun 2014 Posts: 14 Problem on boats and streams Required help to solve math homework problems What is the time taken by the boat to go to 68 km downstream, If a boat can travel with a speed of 13 km/hr in still water and the speed of the stream is 4 km/hr?
07-10-2014   #2
MAS1

Join Date: Dec 2008
Posts: 249

Quote:
 Originally Posted by burgess Required help to solve math homework problems What is the time taken by the boat to go to 68 km downstream, If a boat can travel with a speed of 13 km/hr in still water and the speed of the stream is 4 km/hr?
Since the boat is headed downstream we can add the rate of the boat in still water to the rate of the stream giving us a combined rate of 17 km/hr.

distance = rate x time
68 km = 17 km/hr x time
68/17 hr = time
4 hrs = time.

07-11-2014   #3
burgess

Join Date: Jun 2014
Posts: 14

Quote:
 Originally Posted by MAS1 Since the boat is headed downstream we can add the rate of the boat in still water to the rate of the stream giving us a combined rate of 17 km/hr. distance = rate x time 68 km = 17 km/hr x time 68/17 hr = time 4 hrs = time.
Thank you so much

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