A boat traveled upstream...

[MaysaJ757]

Hi there,

I'm struggling to approach this problem the right way. Any guidance here would be great.

A boat traveled upstream a distance of 90 miles at an average speed (v-3) miles per hour and then traveled the same distance downstream at an average speed (v+3) miles per hour. If the trip upstream took half an hourlonger than the trip downstream, how many hours did it take the boat to ravel downstream?
Answers:
2.5, 2.4, 2.3, 2.2, 2.1
(Right answer is A)

[tim]

Start by setting up an RTD chart. This should *always* be your first thought when you see a rates problem. Do what you can with the chart, then let us know if you get stuck later in the problem.

[RonPurewal]

https://www.manhattanprep.com/gmat/forums/post5886.html

[RonPurewal]

also, for future reference, this is the wrong thread for gmat prep problems (which have their own folder).

please take care to post things in the correct places. thank you.