SOLUTION: Mark Martin can row upstream at 5mph and downstream at 11mph. If Mark starts rowing upstream until he gets tired and then rows downstream to his starting point, hhow far did Mark r

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Numbers -> SOLUTION: Mark Martin can row upstream at 5mph and downstream at 11mph. If Mark starts rowing upstream until he gets tired and then rows downstream to his starting point, hhow far did Mark r      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

   

Question 236019: Mark Martin can row upstream at 5mph and downstream at 11mph. If Mark starts rowing upstream until he gets tired and then rows downstream to his starting point, hhow far did Mark row if the entire trip took 4 hours?
Answer by josmiceli(3012) About Me  (Show Source):
You can put this solution on YOUR website!
Write a separate equation for each
part of the trip
upstream:

(1) mi
downstream:

(2) mi
also:
(I'll call them both )
hrs
hrs
--------------------------
(1)
(2)
(2)
Subtract (1) from (2)



hrs
and, since



-----------------------
(1)

mi
and


mi
Both distances are the same, as they should be
Mark rowed mi