Boating Trip

Speed = distance/time

use this and set up the 2 equations

For going up the river :
90 = t * (v - 3)

For going down the river :
90 = (t - 0.5) * (v + 3)

solve for the equations.to get 2.5

hence 2.5 for downstream and 3 hrs for upstream..

hope it helps..

PS: be careful while solving the equation...

D=RT

Time taken upstream = 90/v-3...(1)

time taken downstream= 90 / v+3..(2)

upstream takes 0.5 hour more..

thus..( 90/v-3) - (90/v+3) = 0.5

solving we get v = 33

substitute in (2)...

time taken = 90/36= 2.5

thanks raunekk and sudhir you guys be very helpful todaay! Major props and thanks again!!!

Can any of you please provide how you solved the equation? It's taking me forever to solve for either v or t. any suggestions?

kshin78 wrote:Can any of you please provide how you solved the equation? It's taking me forever to solve for either v or t. any suggestions?

never mind - figured it out. that was a longggggg process though...don't know if i can do that in two minutes..more like 4-5 minutes!

How did you guys end up solving the equations?

Its taking me extremely long.....

THANKS!