Posted by Anita on Friday, November 9, 2007 at 7:36pm.
A polot flies 630 miles wit a tail wind of 35 miles per hour. Against the wind, he flies only 455 miles in the same amount of time. Find the rate of the plane in still air.

algebra (21)  bobpursley, Friday, November 9, 2007 at 7:46pm
630=(r+35)time
455=(r35)time
Divide the second equation into the first...
630/455= (r+35)/(r35)
solve for r.

algebra (21)  Anita, Friday, November 9, 2007 at 8:01pm
Thanks once again.. bobpursley

algebra (21)  jeffery, Sunday, April 1, 2012 at 2:22pm
train A and B are traveling in the same direction on a parallel tracks. Train A is traveling at 40 miles per hour and Train B is traveling at 48 miles per hour. Train A passes a station at 3:15pm. If train B passes the same station at 3:45pm. At what time will train B catch up with train A
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