Got it...Thanks.. On Wed, Jul 6, 2011 at 11:31 PM, shiv narayan <narayan.shiv...@gmail.com>wrote:
> speed of river=(distance traveled by object in it) / total time it > took to travel > > here hat has traveled a distance of 1 KM > and it has taken =5mn+5 min=10 min=10min/60=1/6 hrs; > so speed = 1/(1/6)=6km/hr > > On Jul 6, 9:28 pm, Tushar Bindal <tushicom...@gmail.com> wrote: > > Let speed of boat be x miles/hr > > Let speed of river be s miles/hr > > > > First Method: > > Hat comes down 1 mile in 10 minutes. > > Hat comes with flow of river only. So its speed is equal to speed of > river. > > In 60 minutes, it will travel 6 miles. > > thus, s = 6 miles/hr > > > > Second Method: > > Distance travelled upward by boat = 1 + (5/60)*(x-s) miles > > Distance travelled downward by boat = (5/60)*(x+s) miles > > Both are same, so > > 1 + (5/60)*(x-s) = (5/60)*(x+s) > > x gets cancelled, and we have > > s/6 = 1 > > s = 6 miles/hr > > > > Second method is just one possible method which nobody would like to > follow. > > First one is easier and faster - win-win situation > > For a change the easier method is faster as well > > -- > > Tushar Bindal > > Computer Engineering > > Delhi College of Engineering > > Mob: +919818442705 > > E-Mail : tushicom...@gmail.com > > Website:www.jugadengg.com > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to algogeeks@googlegroups.com. > To unsubscribe from this group, send email to > algogeeks+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
