SOLUTION: If i walk 2 1/2 mph how many minutes would it take to walk 7/8 mile?

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: If i walk 2 1/2 mph how many minutes would it take to walk 7/8 mile?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 926661: If i walk 2 1/2 mph how many minutes would it take to walk 7/8 mile?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
If your rate is 2 1/2 mi/hr, then that is
the same as 5 mi in 2 hrs, so your rate
is: +5%2F2+ mi/hr
-----------------
+d+=+r%2At+
+7%2F8+=+%285%2F2%29%2At+
where +t+ is in hours
Multiply both sides by +8+
+7+=+20t+
+t+=+7%2F20+ hrs
------------------
Multiply this result by +60+
to get answer in terms of minutes
+%28+7%2F20+%29%2A60+=+21+ minutes
-----------------------------
Hope this helps- I don't know if it's
algebra or pre-algebra